mypy

Enable native AArch64 Ubuntu CI jobs #10976

Job	Run time
Run mypy on Lib/_pyrepl	23s
Run mypy on Lib/test/libregrtest	23s
Run mypy on Tools/build	23s
Run mypy on Tools/cases_generator	22s
Run mypy on Tools/clinic	24s
Run mypy on Tools/jit	25s
Run mypy on Tools/peg_generator	23s
Run mypy on Tools/wasm	21s
	3m 4s

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