Fix some resource leaks by open file handles

[marlamb]

No description provided.

[Byron]

Thanks a lot, amazing fixes!
It's odd that these survived so long, maybe this indicates the GitPython is mostly used in one-off commands rather than long running processes.

[marlamb]

You are welcome, thanks for merging that quickly!

[Codym48]

Thank you for committing this @marlamb and merging it @Byron!

(We only tripped over one of these after we enabled filterwarnings("error") and executed the pytest suite locally within a linked worktree. It didn't appear when running within the main worktree or within any CI pipeline.)

Any idea when the next release is scheduled? Can I volunteer to help?

[Byron]

@Codym48 Thanks for your help! It would be great if #1535 cold be merged before a release is created, it's just missing a test. You could probably submit a PR on top of that one to add it. Thank you.

[Codym48]

How about something like this? kfreezen#1