Tests

Sync typeshed (#21707) #22688

Job	Run time
Test mypyc suite with 32-bit Python	11m 56s
Test suite with py314-windows-64	32m 38s
Test suite with py315-ubuntu, mypyc-compiled	16m 3s
Test suite with py314t-ubuntu, mypyc-compiled	18m 19s
Test suite with py314-ubuntu, mypyc-compiled	16m 2s
Test suite with py312-ubuntu	10m 45s
Parallel tests with py314-ubuntu, interpreted	27m 27s
Parallel tests with py314-windows-64, interpreted	11m 56s
mypyc runtime tests with py310-ubuntu	7m 34s
Type check our own code (py310-ubuntu)	1m 10s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 17s
Test suite with py313-ubuntu, mypyc-compiled	16m 14s
mypyc runtime tests with py313-macos	6m 3s
Test suite with py310-ubuntu, mypyc-compiled	16m 50s
Test suite with py311-ubuntu	10m 5s
Formatting and code style with Black + ruff	1m 52s
Type check our own code (py310-windows-64)	2m 31s
	3h 54m 42s

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