mypy

GH-145278: freeze encodings (partially) and linecache (#148347) #20721

Job	Run time
Run mypy on Tools/jit	19s
Run mypy on Lib/test/libregrtest	18s
Run mypy on Tools/clinic	19s
Run mypy on Tools/build	18s
Run mypy on Lib/_pyrepl	18s
Run mypy on Lib/tomllib	16s
Run mypy on Tools/peg_generator	18s
Run mypy on Tools/check-c-api-docs	18s
Run mypy on Tools/cases_generator	17s
	2m 41s

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