mypy

gh-143195: fix UAF in `{bytearray,memoryview}.hex(sep)` via re-entran… #18766

Job	Run time
Run mypy on Tools/cases_generator	18s
Run mypy on Lib/_pyrepl	19s
Run mypy on Tools/check-c-api-docs	19s
Run mypy on Tools/build	22s
Run mypy on Lib/test/libregrtest	22s
Run mypy on Tools/clinic	18s
Run mypy on Tools/jit	20s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/peg_generator	18s
	2m 53s

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