update imp.py from CPython 3.11

[Reid00]

related: #4564

[youknowone]

This PR contains previously merged commit about test_hashlib.
You probably want to use git rebase or git reset --hard to clear the upstream context before making a patch.
Using patch branches rather than main will also be helpful to make those work easier.

[youknowone]

Would you check if your git email configuration matches to the github id?

Checking current config:

git config user.email

You can change either the local config or GitHub config to make them aligned

[Reid00]

Thank you for your advice. I changed the local user.email and will use patch branches.

[youknowone]

Thank you for contributing!