mypy

gh-148395: Fix a possible UAF in `{LZMA,BZ2,_Zlib}Decompressor` (GH-1… #10420

Job	Run time
Run mypy on Tools/build	21s
Run mypy on Tools/cases_generator	14s
Run mypy on Lib/test/libregrtest	24s
Run mypy on Tools/clinic	13s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/peg_generator	19s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Lib/_pyrepl	23s
Run mypy on Tools/jit	20s
	2m 48s

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