[git-webkit] Use --date=unix in log commands

[JonWBedard]

72a02b7

[git-webkit] Use --date=unix in log commands
https://bugs.webkit.org/show_bug.cgi?id=240537
<rdar://93464544 >

Reviewed by Stephanie Lewis.

Override any local configuration for git log's date format,
use a simpler date format.

* Tools/Scripts/libraries/webkitscmpy/setup.py: Bump version.
* Tools/Scripts/libraries/webkitscmpy/webkitscmpy/__init__.py: Ditto.
* Tools/Scripts/libraries/webkitscmpy/webkitscmpy/local/git.py:
(Git.Cache.populate): Use --date=unix.
(Git.commit): Ditto.
(Git._args_from_content): Parse --date=unix.
(Git.commits): Use --date=unix.
* Tools/Scripts/libraries/webkitscmpy/webkitscmpy/mocks/local/git.py:
* Tools/Scripts/libraries/webkitscmpy/webkitscmpy/test/git_unittest.py:
(TestGit.test_log):

Canonical link: https://commits.webkit.org/250767@main
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@294510 268f45cc-cd09-0410-ab3c-d52691b4dbfc

[webkit-early-warning-system]

Committed r294510 (250767@main): https://commits.webkit.org/250767@main

Reviewed commits have been landed. Closing PR #805 and removing active labels.