mypy

gh-148779: Update Briefcase link in android.rst documentation (#148777) #20795

Job	Run time
Run mypy on Lib/_pyrepl	16s
Run mypy on Lib/test/libregrtest	17s
Run mypy on Tools/jit	18s
Run mypy on Tools/build	19s
Run mypy on Tools/check-c-api-docs	14s
Run mypy on Tools/cases_generator	17s
Run mypy on Tools/peg_generator	16s
Run mypy on Tools/clinic	18s
Run mypy on Lib/tomllib	17s
	2m 32s

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