Tests

Sync typeshed (#20241) #19370

Job	Run time
Test mypyc suite with 32-bit Python	8m 48s
Test suite with py311-ubuntu	9m 16s
Test suite with py310-ubuntu	12m 42s
Test suite with py39-ubuntu, mypyc-compiled	16m 8s
mypyc runtime tests with py313-macos	3m 32s
Formatting and code style with Black + ruff	2m 4s
Test suite with py313-ubuntu, mypyc-compiled	14m 42s
Type check our own code (py39-windows-64)	2m 18s
Test suite with py314-windows-64	26m 29s
Type check our own code (py39-ubuntu)	1m 43s
Test suite with py314-ubuntu, mypyc-compiled	14m 16s
Test suite with py312-ubuntu, mypyc-compiled	14m 9s
mypyc runtime tests with py310-ubuntu	4m 40s
	2h 10m 47s

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