mypy

GH-126910: Add GNU backtrace support for unwinding JIT frames (#149104) #21149

Job	Run time
Run mypy on Lib/test/libregrtest	18s
Run mypy on Lib/_pyrepl	19s
Run mypy on Tools/clinic	17s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Tools/cases_generator	20s
Run mypy on Tools/build	17s
Run mypy on Tools/peg_generator	13s
Run mypy on Lib/tomllib	18s
Run mypy on Tools/jit	19s
	2m 38s

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