mypy

gh-143164: Fix incorrect error message for ctypes bitfield overflow (… #9991

Job	Run time
Run mypy on Lib/test/libregrtest	19s
Run mypy on Tools/build	18s
Run mypy on Tools/check-c-api-docs	16s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/peg_generator	21s
Run mypy on Tools/cases_generator	15s
Run mypy on Tools/clinic	17s
Run mypy on Tools/jit	20s
Run mypy on Lib/_pyrepl	17s
	2m 40s

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