Add support for Python 3.12 #174

Job	Run time
Run lint and type checks / Lint and type checks (3.8)	53s
Run lint and type checks / Lint and type checks (3.9)	1m 1s
Run lint and type checks / Lint and type checks (3.10)	58s
Run lint and type checks / Lint and type checks (3.11)	53s
Run unit tests / Run unit tests (ubuntu-latest, 3.8)	1m 14s
Run unit tests / Run unit tests (ubuntu-latest, 3.9)	1m 29s
Run unit tests / Run unit tests (ubuntu-latest, 3.10)	1m 20s
Run unit tests / Run unit tests (ubuntu-latest, 3.11)	1m 15s
Run unit tests / Run unit tests (windows-latest, 3.8)	2m 28s
Run unit tests / Run unit tests (windows-latest, 3.9)	2m 33s
Run unit tests / Run unit tests (windows-latest, 3.10)	2m 45s
Run unit tests / Run unit tests (windows-latest, 3.11)	3m 37s
Run integration tests / Run integration tests (3.8)	4m 6s
Run integration tests / Run integration tests (3.9)	4m 43s
Run integration tests / Run integration tests (3.10)	4m 17s
Run integration tests / Run integration tests (3.11)	4m 1s
	37m 33s

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