Saner Python version specifier #796

Job	Run time
build-lint-test (3.9, ubuntu-latest)	5m 22s
build-lint-test (3.12, macos-intel)	7m 15s
build-lint-test (3.9, windows-latest)	5m 54s
build-lint-test (3.9, macos-intel)	7m 51s
build-lint-test (3.9, macos-arm)	7m 33s
build-lint-test (3.12, ubuntu-latest)	5m 30s
build-lint-test (3.12, windows-latest)	6m 20s
build-lint-test (3.12, macos-arm)	5m 43s
	51m 28s

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