This quiets the following deprecation warning:
./Scripts/reverse_integration_check.py:56: DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.
tag for tag in unmerged_tags if LooseVersion(tag) > LooseVersion(epoch_tag)
[`distutils.LooseVersion` will be removed in Python 3.12][0], and there
doesn't seem to be an equivalent in the standard library. I implemented
a simple `Version` class to replicate this functionality.
(I also looked into other solutions, such as rewriting the script in
Swift, but this seems like the right solution for now.)
[0]: https://peps.python.org/pep-0632/
b739f739e7