Log Message:
py-pygit2: updated to 1.12.0

1.12.0 (2023-04-01)
- Upgrade to libgit2 v1.6.3
- Update Linux wheels to bundle OpenSSL 3.0.8
- Downgrade Linux wheels to manylinux2014
- New ``ConflictCollection.__contains__``
- New ``Repository.references.iterator(...)``
- New ``favor``, ``flags`` and ``file_flags`` optional arguments for
  ``Repository.merge(...)``
- New ``keep_all`` and ``paths`` optional arguments for ``Repository.stash(...)``
- New ``Respository.state()``
- Improve ``Repository.write_archive(...)`` performance
- Sync type annotations