Tests

Batch SCCs for parallel processing #21866

Job	Run time
Test mypyc suite with 32-bit Python	10m 58s
Test suite with py310-ubuntu, mypyc-compiled	15m 36s
Test suite with py312-ubuntu	9m 35s
Test suite with py311-ubuntu	9m 9s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 11s
Test suite with py314-ubuntu, mypyc-compiled	15m 11s
Formatting and code style with Black + ruff	1m 59s
Type check our own code (py310-ubuntu)	1m 13s
Type check our own code (py310-windows-64)	1m 40s
mypyc runtime tests with py310-ubuntu	7m 4s
Test suite with py314t-ubuntu, mypyc-compiled	16m 41s
Parallel tests with py314-windows-64, interpreted	7m 49s
Test suite with py313-ubuntu, mypyc-compiled	15m 23s
Parallel tests with py314-ubuntu, interpreted	27m 10s
Test suite with py314-windows-64	28m 41s
mypyc runtime tests with py313-macos	6m 4s
	3h 21m 24s

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