mypy

Add Stan to docs config reviewers (#148164) #20451

Job	Run time
Run mypy on Lib/test/libregrtest	17s
Run mypy on Tools/jit	21s
Run mypy on Lib/_pyrepl	15s
Run mypy on Tools/build	15s
Run mypy on Tools/cases_generator	17s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/check-c-api-docs	20s
Run mypy on Tools/clinic	17s
Run mypy on Tools/peg_generator	15s
	2m 33s

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