Enable support for Python 3.11

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Fixes #1386 🦕

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[fumoboy007]

@ad-m-ss Why did you close the pull request? 😢

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In the near future, I will not be able to commit resources to meet the contribution requirements (review of the license agreement by the legal team, etc.). I didn't expect to have to sign a contract when I was creating this PR. I don't want to give the impression that I can meet them quickly, because I know that many people expect this change.

Meanwhile, the changes I proposed here are not very creative, because I searched "Python 3.10" and added "Python 3.11" everywhere. I hope someone recreates them, unfortunately.