Tests

Drop unreleased from heading #19515

Job	Run time
Test mypyc suite with 32-bit Python	8m 53s
Test suite with py39-ubuntu, mypyc-compiled	14m 48s
Test suite with py310-ubuntu	12m 30s
Test suite with py311-ubuntu	9m 25s
mypyc runtime tests with py313-macos	4m 36s
Test suite with py314-windows-64	26m 11s
Test suite with py312-ubuntu, mypyc-compiled	14m 55s
Type check our own code (py39-ubuntu)	1m 39s
Test suite with py313-ubuntu, mypyc-compiled	14m 36s
Test suite with py314-ubuntu, mypyc-compiled	14m 34s
Formatting and code style with Black + ruff	1m 55s
mypyc runtime tests with py310-ubuntu	5m 9s
Type check our own code (py39-windows-64)	2m 18s
	2h 11m 29s

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