feat: Support Python 3.12 #1060

Job	Run time
Generic pre-commit checks	23s
Verify commit messages	39s
Clippy	1m 15s
Check features	1m 8s
Rustfmt	7s
Python 3.7 on ubuntu-20.04	2m 24s
Python 3.8 on ubuntu-20.04	1m 55s
Test draft201909 (stable) on ubuntu-20.04	1m 16s
Python 3.9 on ubuntu-20.04	1m 59s
Test draft202012 (stable) on ubuntu-20.04	1m 23s
Build on wasm32-unknown-unknown	45s
Python 3.10 on ubuntu-20.04	2m 11s
Test draft201909 (stable) on macos-12	2m 49s
Python 3.11 on ubuntu-20.04	2m 10s
Test draft202012 (stable) on macos-12	1m 43s
Python 3.12 on ubuntu-20.04	1m 57s
Run test coverage	4m 16s
Python 3.7 on macos-12	5m 21s
Test draft201909 (stable) on windows-2022	2m 36s
Test draft202012 (stable) on windows-2022	3m 8s
Python 3.8 on macos-12	3m 22s
Python 3.9 on macos-12	3m 12s
Python 3.10 on macos-12	3m 5s
Python 3.11 on macos-12	3m 8s
Python 3.12 on macos-12	5m 39s
Python 3.7 on windows-2022	5m 36s
Python 3.8 on windows-2022	5m 18s
Python 3.9 on windows-2022	4m 33s
Python 3.10 on windows-2022	5m 28s
Python 3.11 on windows-2022	4m 58s
Python 3.12 on windows-2022	4m 48s
	1h 28m 32s

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