mypy

gh-130273: Fix traceback color output with unicode characters #20478

Job	Run time
Run mypy on Tools/peg_generator	21s
Run mypy on Tools/clinic	22s
Run mypy on Tools/jit	18s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/check-c-api-docs	21s
Run mypy on Lib/test/libregrtest	23s
Run mypy on Tools/cases_generator	16s
Run mypy on Lib/_pyrepl	22s
Run mypy on Tools/build	16s
	2m 56s

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