mypy

gh-154271: Enable socket ancillary data and forkserver on illumos (GH… #22824

Job	Run time
Run mypy on Tools/check-c-api-docs	14s
Run mypy on Lib/_pyrepl	18s
Run mypy on Tools/jit	23s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/build	17s
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/peg_generator	18s
Run mypy on Lib/test/libregrtest	17s
Run mypy on Tools/clinic	14s
	2m 35s

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