Lint

Use pytest-beartype-tests plugin #1423

Job	Run time
build (3.13, windows-latest, pre-commit)	53s
build (3.13, ubuntu-latest, pre-push)	50s
build (3.13, windows-latest, manual)	52s
build (3.13, ubuntu-latest, pre-commit)	35s
build (3.13, ubuntu-latest, manual)	33s
build (3.13, windows-latest, pre-push)	51s
completion-lint	2s
	4m 36s

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