Add Python 3.12 Support (#752) #992

Job	Run time
Run tests on legacy versions (3.7)	1m 30s
Run tests on legacy versions (pypy3.9)	1m 14s
Run tests with coverage	1m 55s
Run linters (flake8)	1m 4s
Run linters (pydocstyle)	1m 8s
Run linters (mypy)	1m 15s
Run tests (3.8)	1m 26s
Run linters (pylint)	1m 13s
Run tests (3.9)	1m 23s
Run tests (3.10)	1m 17s
Run tests (3.11)	1m 20s
Run tests (3.12)	1m 37s
	16m 22s

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