Enable install & testing against Python 3.12#1379

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neiljp wants to merge 2 commits intozulip:mainfrom

neiljp:2023-04-13-CI-Python-3.12-test

Commits on May 11, 2024

requirements: Upgrade typing_extensions from ~=4.5.0 to ~=4.6.0.
neiljp
committed
setup/lint-and-test: Add initial CPython 3.12 testing support.
neiljp
committed