Add Python 3.12 Support (#752) #990

Job	Run time
Run tests (3.8)	1m 24s
Run tests on legacy versions (3.7)	1m 20s
Run tests (3.9)	1m 21s
Run linters (flake8)	1m 11s
Run tests on legacy versions (pypy3.9)	1m 1s
Run tests (3.10)	1m 17s
Run linters (pydocstyle)	1m 3s
Run tests (3.11)	1m 26s
Run linters (mypy)	1m 7s
Run tests (3.12)	1m 35s
Run linters (pylint)	1m 18s
Run tests with coverage	1m 58s
	16m 1s

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