Tests

Sync typeshed #20199

Job	Run time
Test mypyc suite with 32-bit Python	9m 36s
Test suite with py314-ubuntu, mypyc-compiled	15m 13s
Test suite with py310-ubuntu, mypyc-compiled	14m 59s
Test suite with py314-windows-64	26m 48s
Test suite with py312-ubuntu	9m 54s
Test suite with py311-ubuntu	9m 25s
Test suite with py314t-ubuntu, mypyc-compiled	17m 35s
Test suite with py313-ubuntu, mypyc-compiled	15m 21s
Formatting and code style with Black + ruff	1m 53s
Type check our own code (py310-windows-64)	2m 21s
mypyc runtime tests with py310-ubuntu	5m 16s
mypyc runtime tests with py313-macos	5m 58s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 17s
Parallel tests with py314-ubuntu, interpreted	22m 12s
Type check our own code (py310-ubuntu)	1m 30s
	3h 6m 18s

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