mypy

gh-148487: Fix issues in `test_add_python_opts` (#148507) #20704

Job	Run time
Run mypy on Tools/check-c-api-docs	21s
Run mypy on Lib/tomllib	15s
Run mypy on Tools/peg_generator	16s
Run mypy on Tools/cases_generator	18s
Run mypy on Tools/build	19s
Run mypy on Tools/jit	20s
Run mypy on Lib/_pyrepl	23s
Run mypy on Tools/clinic	16s
Run mypy on Lib/test/libregrtest	18s
	2m 46s

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