Bump puma from 2.16.0 to 4.3.1

[dependabot[bot]]

Bumps puma from 2.16.0 to 4.3.1.

Release notes

*Sourced from [puma's releases](https://github.com/puma/puma/releases).* > ## v4.3.0 - Mysterious Traveller >  > > [Mysterious Traveller](https://www.youtube.com/watch?v=bZ44_P6iM18) > > * Features > * Strip whitespace at end of HTTP headers ([#2010](https://github-redirect.dependabot.com/puma/puma/issues/2010)) > * Optimize HTTP parser for JRuby ([#2012](https://github-redirect.dependabot.com/puma/puma/issues/2012)) > * Add SSL support for the control app and cli ([#2046](https://github-redirect.dependabot.com/puma/puma/issues/2046), [#2052](https://github-redirect.dependabot.com/puma/puma/issues/2052)) > > * Bugfixes > * Fix Errno::EINVAL when SSL is enabled and browser rejects cert ([#1564](https://github-redirect.dependabot.com/puma/puma/issues/1564)) > * Fix pumactl defaulting puma to development if an environment was not specified ([#2035](https://github-redirect.dependabot.com/puma/puma/issues/2035)) > * Fix closing file stream when reading pid from pidfile ([#2048](https://github-redirect.dependabot.com/puma/puma/issues/2048)) > * Fix a typo in configuration option `--extra_runtime_dependencies` ([#2050](https://github-redirect.dependabot.com/puma/puma/issues/2050)) > > ## 4.2.1 > * 3 bugfixes > * Fix socket activation of systemd (pre-existing) unix binder files ([#1842](https://github-redirect.dependabot.com/puma/puma/issues/1842), [#1988](https://github-redirect.dependabot.com/puma/puma/issues/1988)) > * Deal with multiple calls to bind correctly ([#1986](https://github-redirect.dependabot.com/puma/puma/issues/1986), [#1994](https://github-redirect.dependabot.com/puma/puma/issues/1994), [#2006](https://github-redirect.dependabot.com/puma/puma/issues/2006)) > * Accepts symbols for `verify_mode` ([#1222](https://github-redirect.dependabot.com/puma/puma/issues/1222)) > > ## 4.2.0 - Distant Airhorns > * 6 features > * Pumactl has a new -e environment option and reads config/puma/.rb config files ([#1885](https://github-redirect.dependabot.com/puma/puma/issues/1885)) > * Semicolons are now allowed in URL paths (MRI only), useful for Angular or Redmine ([#1934](https://github-redirect.dependabot.com/puma/puma/issues/1934)) > * Allow extra dependencies to be defined when using prune_bundler ([#1105](https://github-redirect.dependabot.com/puma/puma/issues/1105)) > * Puma now reports the correct port when binding to port 0, also reports other listeners when binding to localhost ([#1786](https://github-redirect.dependabot.com/puma/puma/issues/1786)) > * Sending SIGINFO to any Puma worker now prints currently active threads and their backtraces ([#1320](https://github-redirect.dependabot.com/puma/puma/issues/1320)) > * Puma threads all now have their name set on Ruby 2.3+ ([#1968](https://github-redirect.dependabot.com/puma/puma/issues/1968)) > * 4 bugfixes > * Fix some misbehavior with phased restart and externally SIGTERMed workers ([#1908](https://github-redirect.dependabot.com/puma/puma/issues/1908), [#1952](https://github-redirect.dependabot.com/puma/puma/issues/1952)) > * Fix socket closing on error ([#1941](https://github-redirect.dependabot.com/puma/puma/issues/1941)) > * Removed unnecessary SIGINT trap for JRuby that caused some race conditions ([#1961](https://github-redirect.dependabot.com/puma/puma/issues/1961)) > * Fix socket files being left around after process stopped ([#1970](https://github-redirect.dependabot.com/puma/puma/issues/1970)) > * Absolutely thousands of lines of test improvements and fixes thanks to [@​MSP-Greg](https://github.com/MSP-Greg) > >  > > ## 4.1.1 > 3 bugfixes > > * Revert our attempt to not dup STDOUT/STDERR ([#1946](https://github-redirect.dependabot.com/puma/puma/issues/1946)) > * Fix socket close on error ([#1941](https://github-redirect.dependabot.com/puma/puma/issues/1941)) > * Fix workers not shutting down correctly ([#1908](https://github-redirect.dependabot.com/puma/puma/issues/1908)) > > ## 4.1.0 - Fourth and One > * 4 features > * Add REQUEST_PATH on parse error message ([#1831](https://github-redirect.dependabot.com/puma/puma/issues/1831)) > * You can now easily add custom log formatters with the `log_formatter` config option ([#1816](https://github-redirect.dependabot.com/puma/puma/issues/1816)) > ... (truncated)

Changelog

*Sourced from [puma's changelog](https://github.com/puma/puma/blob/master/History.md).* > ## 4.3.1 and 3.12.2 / 2019-12-05 > > * Security > * Fix: a poorly-behaved client could use keepalive requests to monopolize Puma's reactor and create a denial of service attack. CVE-2019-16770. > > ## 4.3.0 / 2019-11-07 > > * Features > * Strip whitespace at end of HTTP headers ([#2010](https://github-redirect.dependabot.com/puma/puma/issues/2010)) > * Optimize HTTP parser for JRuby ([#2012](https://github-redirect.dependabot.com/puma/puma/issues/2012)) > * Add SSL support for the control app and cli ([#2046](https://github-redirect.dependabot.com/puma/puma/issues/2046), [#2052](https://github-redirect.dependabot.com/puma/puma/issues/2052)) > > * Bugfixes > * Fix Errno::EINVAL when SSL is enabled and browser rejects cert ([#1564](https://github-redirect.dependabot.com/puma/puma/issues/1564)) > * Fix pumactl defaulting puma to development if an environment was not specified ([#2035](https://github-redirect.dependabot.com/puma/puma/issues/2035)) > * Fix closing file stream when reading pid from pidfile ([#2048](https://github-redirect.dependabot.com/puma/puma/issues/2048)) > * Fix a typo in configuration option `--extra_runtime_dependencies` ([#2050](https://github-redirect.dependabot.com/puma/puma/issues/2050)) > > ## 4.2.1 / 2019-10-07 > > * 3 bugfixes > * Fix socket activation of systemd (pre-existing) unix binder files ([#1842](https://github-redirect.dependabot.com/puma/puma/issues/1842), [#1988](https://github-redirect.dependabot.com/puma/puma/issues/1988)) > * Deal with multiple calls to bind correctly ([#1986](https://github-redirect.dependabot.com/puma/puma/issues/1986), [#1994](https://github-redirect.dependabot.com/puma/puma/issues/1994), [#2006](https://github-redirect.dependabot.com/puma/puma/issues/2006)) > * Accepts symbols for `verify_mode` ([#1222](https://github-redirect.dependabot.com/puma/puma/issues/1222)) > > ## 4.2.0 / 2019-09-23 > > * 6 features > * Pumactl has a new -e environment option and reads `config/puma/.rb` config files ([#1885](https://github-redirect.dependabot.com/puma/puma/issues/1885)) > * Semicolons are now allowed in URL paths (MRI only), useful for Angular or Redmine ([#1934](https://github-redirect.dependabot.com/puma/puma/issues/1934)) > * Allow extra dependencies to be defined when using prune_bundler ([#1105](https://github-redirect.dependabot.com/puma/puma/issues/1105)) > * Puma now reports the correct port when binding to port 0, also reports other listeners when binding to localhost ([#1786](https://github-redirect.dependabot.com/puma/puma/issues/1786)) > * Sending SIGINFO to any Puma worker now prints currently active threads and their backtraces ([#1320](https://github-redirect.dependabot.com/puma/puma/issues/1320)) > * Puma threads all now have their name set on Ruby 2.3+ ([#1968](https://github-redirect.dependabot.com/puma/puma/issues/1968)) > * 4 bugfixes > * Fix some misbehavior with phased restart and externally SIGTERMed workers ([#1908](https://github-redirect.dependabot.com/puma/puma/issues/1908), [#1952](https://github-redirect.dependabot.com/puma/puma/issues/1952)) > * Fix socket closing on error ([#1941](https://github-redirect.dependabot.com/puma/puma/issues/1941)) > * Removed unnecessary SIGINT trap for JRuby that caused some race conditions ([#1961](https://github-redirect.dependabot.com/puma/puma/issues/1961)) > * Fix socket files being left around after process stopped ([#1970](https://github-redirect.dependabot.com/puma/puma/issues/1970)) > * Absolutely thousands of lines of test improvements and fixes thanks to [@​MSP-Greg](https://github.com/MSP-Greg) > > ## 4.1.1 / 2019-09-05 > > * 3 bugfixes > * Revert our attempt to not dup STDOUT/STDERR ([#1946](https://github-redirect.dependabot.com/puma/puma/issues/1946)) > * Fix socket close on error ([#1941](https://github-redirect.dependabot.com/puma/puma/issues/1941)) > * Fix workers not shutting down correctly ([#1908](https://github-redirect.dependabot.com/puma/puma/issues/1908)) > > ## 4.1.0 / 2019-08-08 > > ... (truncated)

Commits

- [`2986bc4`](https://github.com/puma/puma/commit/2986bc4ab5e03072d4c09739649c5c9221b13c8d) 4.3.1 - [`285c3f9`](https://github.com/puma/puma/commit/285c3f963652e8ba6a2835c0f443710abd9c5c32) 4.3.1 and 4.2.1 release notes - [`98a1f03`](https://github.com/puma/puma/commit/98a1f03e5ebe40cf56b65b0bf60adf97057e0eaf) Merge pull request from GHSA-7xx3-m584-x994 - [`d20242b`](https://github.com/puma/puma/commit/d20242b2ec76cc7e8078986f29f1e083f62ef157) 4.3.0 - [`4852902`](https://github.com/puma/puma/commit/4852902b8992d3d88fea6d485163af86ff847c3d) Merge pull request [#2068](https://github-redirect.dependabot.com/puma/puma/issues/2068) from ahorek/travis_fixes - [`2d89d7c`](https://github.com/puma/puma/commit/2d89d7ccee9e957058ff313dc78d2607622423c0) travis fixes - [`3203159`](https://github.com/puma/puma/commit/3203159ac6917cfe7ed2378077e186bc844e34d9) dont set frozen-string-literal for ruby 2.2 [changelog skip] ([#2066](https://github-redirect.dependabot.com/puma/puma/issues/2066)) - [`8e751a8`](https://github.com/puma/puma/commit/8e751a8ce09b7922aa680ed4e30ac73366458243) Add TruffleRuby to (Travis) CI - [`536c3ed`](https://github.com/puma/puma/commit/536c3ed4a1916aa5c691cd3018a063c9a01cad06) Rubocop failures - [`554c02c`](https://github.com/puma/puma/commit/554c02cfafcdbdd4d4f9a8c5c8837db6febc7989) Also make request_body_wait_chunked less strict - Additional commits viewable in [compare view](https://github.com/puma/puma/compare/v2.16.0...v4.3.1)

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[nanda-prbot]

@dependabot[bot] needs to request domain review. @dependabot[bot] isn't a platform reviewer and needs to request platform review.

[smudge]

/domain @smudge /platform @samandmoore

[smudge]

<< domain LGTM

[nanda-prbot]

Needs somebody from @samandmoore to claim platform review

Use the shovel operator to claim, e.g.:

@myname << domain && platform

[smudge]

@samandmoore is there a reason our puma version was pinned to 2.X? Just want to make sure that moving the pin doesn't break other stuff.

[samandmoore]

to be honest, i forget. i don't think we had a really strong reason to do it, we we're mainly being conservative because we got burned by unicorn and passenger upgrades in the past before arriving at puma. over the years since we locked this down we've successfully, and quietly, upgraded puma in all our production apps to v4, so this seems totally fine to me.

[samandmoore]

<<platformlgtm

[nanda-prbot]

Approved! :star: :+1: :guitar: