Bump ffi from 1.9.14 to 1.12.2

[dependabot[bot]]

Bumps ffi from 1.9.14 to 1.12.2.

Changelog

Sourced from ffi's changelog.

1.12.2 / 2020-02-01

• Fix possible segfault at FFI::Struct#[] and []= after GC.compact . #742

1.12.1 / 2020-01-14

Added:

• Add binary gem support for ruby-2.7 on Windows

1.12.0 / 2020-01-14

Added:

• FFI::VERSION is defined as part of require 'ffi' now. It is no longer necessary to require 'ffi/version' .

Changed:

• Update libffi to latest master.

Deprecated:

• Overwriting struct layouts is now warned and will be disallowed in ffi-2.0. #734, #735

1.11.3 / 2019-11-25

Removed:

• Remove support for tainted objects which cause deprecation warnings in ruby-2.7. #730

1.11.2 / 2019-11-11

Added:

• Add DragonFlyBSD as a platform. #724

Changed:

• Sort all types.conf files, so that files and changes are easier to compare.
• Regenerated type conf for freebsd12 and x86_64-linux targets. #722
• Remove MACOSX_DEPLOYMENT_TARGET that was targeting very old version 10.4. #647
• Fix library name mangling for non glibc Linux/UNIX. #727
• Fix compiler warnings raised by ruby-2.7
• Update libffi to latest master.

1.11.1 / 2019-05-20

... (truncated)

Commits

• ad524cb Bump VERSION to 1.12.2
• 01cbd06 Update CHANGELOG for 1.12.2
• 6662bcc Replace st_table with simple cache and fix segfault after GC.compact
• 6845314 Remove old references to ruby-1.9
• b54e735 Bump VERSION to 1.12.1
• ee13af1 Do parallel builds in CI docker containers
• 2c81c6b Respect MAKE environment variable for libtest build
• b2793a3 Better document enable/disable libffi switches in the README
• 8169aef Bump VERSION to 1.12.0
• 62c0c97 Update CHANGELOG for version 1.12.0
• Additional commits viewable in compare view

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