mypy

gh-134716: Support regular expressions in -W and PYTHONWARNINGS (GH-1… #16738

Job	Run time
Run mypy on Tools/clinic	44s
Run mypy on Tools/jit	21s
Run mypy on Lib/tomllib	32s
Run mypy on Tools/cases_generator	15s
Run mypy on Tools/peg_generator	32s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/build	19s
Run mypy on Lib/_pyrepl	43s
	3m 44s

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