mypy

gh-138281: Remove unused `topsort` and bump minimal version in `peg_g… #9559

Job	Run time
Run mypy on Lib/_pyrepl	20s
Run mypy on Lib/test/libregrtest	22s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/clinic	14s
Run mypy on Tools/peg_generator	13s
Run mypy on Tools/jit	17s
Run mypy on Tools/build	15s
Run mypy on Tools/cases_generator	15s
	2m 12s

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