mypy

gh-142476: Fix Windows crashing with JIT (GH-143021) #18700

Job	Run time
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/peg_generator	23s
Run mypy on Tools/clinic	18s
Run mypy on Tools/build	20s
Run mypy on Tools/jit	21s
Run mypy on Lib/tomllib	19s
Run mypy on Tools/check-c-api-docs	24s
Run mypy on Lib/test/libregrtest	21s
Run mypy on Lib/_pyrepl	20s
	3m 3s

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