mypy

gh-140677 Add heatmap visualization to Tachyon sampling profiler (#14… #18220

Job	Run time
Run mypy on Lib/test/libregrtest	18s
Run mypy on Lib/tomllib	19s
Run mypy on Tools/clinic	18s
Run mypy on Lib/_pyrepl	20s
Run mypy on Tools/jit	19s
Run mypy on Tools/build	16s
Run mypy on Tools/peg_generator	20s
Run mypy on Tools/cases_generator	19s
	2m 29s

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