PEP 594: Set Status to Final

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📚 Documentation preview 📚: https://pep-previews--3156.org.readthedocs.build/

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All modules scheduled for removal by PEP 594 have been removed in Python 3.12 and Python 3.13. The last batch was: python/cpython#104773

IMO the last remaining task is minor and should not prevent to mark the whole PEP as Final: python/cpython#92758 We forgot to deprecate two binascii helper functions related to the UU encoding and to deprecate the uu codec. There is already a PR for that I'm confident that it will be merged soon.

I prefer to mark PEP 594 as Final now to communicate that all modules have been removed in practice (in the future Python 3.13 version).

cc @brettcannon @tiran

[brettcannon]

Thanks (both for the PR and ripping out the modules)!