Tests

Sync typeshed (#20505) #19934

Job	Run time
Test mypyc suite with 32-bit Python	9m 20s
Test suite with py314t-ubuntu, mypyc-compiled	15m 29s
Test suite with py311-ubuntu	9m 17s
Test suite with py313-ubuntu, mypyc-compiled	13m 55s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 3s
Test suite with py310-ubuntu, mypyc-compiled	14m 6s
Test suite with py314-ubuntu, mypyc-compiled	13m 48s
Parallel tests with py314-ubuntu, interpreted	22m 15s
Test suite with py314-windows-64	26m 43s
mypyc runtime tests with py310-ubuntu	5m 2s
Formatting and code style with Black + ruff	2m 9s
Type check our own code (py310-ubuntu)	1m 42s
Type check our own code (py310-windows-64)	2m 29s
mypyc runtime tests with py313-macos	5m 4s
Test suite with py312-ubuntu	9m 53s
	2h 58m 15s

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