build(deps-dev): Bump tox from 2.1.1 to 3.14.5

[dependabot-preview[bot]]

Bumps tox from 2.1.1 to 3.14.5.

Changelog

Sourced from tox's changelog.

v3.14.5 (2020-02-16)

Features

• Add --discover (fallback to TOX_DISCOVER environment variable via path separator) to inject python executables to try as first step of a discovery - note the executable still needs to match the environment by gaborbernat. #1526

v3.14.4 (2020-02-13)

Bugfixes

• Bump minimal six version needed to avoid using one incompatible with newer virtualenv. - by ssbarnea #1519
• Avoid pypy test failure due to undefined printout var. - by ssbarnea #1521

Features

• Add interrupt_timeout and terminate_timeout that configure delay between SIGINT, SIGTERM and SIGKILL when tox is interrupted. - by sileht #1493
• Add HTTP_PROXY, HTTPS_PROXY and NO_PROXY to default passenv. - by pfmoore #1498

v3.14.3 (2019-12-27)

Bugfixes

• Relax importlib requirement to allow either version 0 or 1 - by chyzzqo2 #1476

Miscellaneous

• Clarify legacy setup.py error message: python projects should commit to a strong consistency of message regarding packaging. We no-longer tell people to add a setup.py to their already configured pep-517 project, otherwise it could imply that pyproject.toml isn't as well supported and recommended as it truly is - by graingert #1478

v3.14.2 (2019-12-02)

Bugfixes

• Fix fallback to global configuration when running in Jenkins. - by daneah #1428
• Fix colouring on windows: colorama is a dep. - by 1138-4EB #1471

Miscellaneous

• improve performance with internal lookup of Python version information - by blueyed #1462
• Use latest version of importlib_metadata package - by kammala #1472

... (truncated)

Commits

• 5feb33a release 3.14.5
• 7409527 Merge pull request #1526 from gaborbernat/force
• e1b165d Allow user to inject specific Pythons to try as step 1 during discovery
• ff6368b Remove Python 3.4 from support pythons list (#1525)
• 0fa8c0e Merge pull request #1522 from tox-dev/release-3.14.4
• de8b708 release 3.14.4
• 853deb5 Avoid incompatible six (#1519)
• 320b0e6 Correcting dependency and import for pytest (#1514)
• d85d2b4 fix pypy CI failure (#1521)
• b7a1559 Fix formatting (#1512)
• Additional commits viewable in compare view

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[dependabot-preview[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.