mypy

gh-141563: Fix test_cppext on macOS (#144685) #19476

Job	Run time
Run mypy on Tools/clinic	20s
Run mypy on Lib/tomllib	18s
Run mypy on Lib/test/libregrtest	21s
Run mypy on Tools/check-c-api-docs	16s
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/peg_generator	19s
Run mypy on Tools/build	21s
Run mypy on Tools/jit	18s
Run mypy on Tools/cases_generator	16s
	2m 49s

Provide feedback