mypy

gh-129964: Fix JIT crash on Windows on Arm #12769

Job	Run time
Run mypy on Lib/_pyrepl	21s
Run mypy on Lib/test/libregrtest	14s
Run mypy on Tools/build	19s
Run mypy on Tools/cases_generator	13s
Run mypy on Tools/clinic	16s
Run mypy on Tools/jit	14s
Run mypy on Tools/peg_generator	15s
Run mypy on Tools/wasm	19s
	2m 11s

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