Sync typeshed #13757

Job	Run time
Test mypyc suite with 32-bit Python	7m 23s
Test suite with py38-ubuntu, mypyc-compiled	17m 47s
Test suite with py38-windows-64	20m 13s
Test suite with py39-ubuntu	16m 33s
Test suite with py310-ubuntu	16m 12s
Test suite with py311-ubuntu, mypyc-compiled	15m 40s
Test suite with py312-ubuntu, mypyc-compiled	17m 49s
Test suite with py313-ubuntu, mypyc-compiled	17m 53s
mypyc runtime tests with py39-macos	4m 48s
Type check our own code (py38-ubuntu)	1m 58s
Type check our own code (py38-windows-64)	2m 27s
Formatting and code style with Black + ruff	35s
	2h 19m 18s

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