mypy

Docs: Update programming FAQ (#144573) #19841

Job	Run time
Run mypy on Tools/clinic	20s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Lib/test/libregrtest	21s
Run mypy on Tools/cases_generator	19s
Run mypy on Lib/_pyrepl	22s
Run mypy on Tools/jit	21s
Run mypy on Tools/build	23s
Run mypy on Lib/tomllib	21s
Run mypy on Tools/peg_generator	18s
	3m 4s

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