Tests

Enable pretty by default #16891

Job	Run time
Test mypyc suite with 32-bit Python	8m 29s
Test suite with py39-ubuntu, mypyc-compiled	14m 29s
Formatting and code style with Black + ruff	1m 47s
Test suite with py39-windows-64	25m 22s
Test suite with py311-ubuntu	9m 25s
Test suite with py310-ubuntu	12m 10s
Test suite with py313-ubuntu, mypyc-compiled	14m 27s
mypyc runtime tests with py39-macos	5m 24s
Type check our own code (py39-ubuntu)	1m 42s
Test suite with py312-ubuntu, mypyc-compiled	13m 53s
Test suite with py314-dev-ubuntu	16m 1s
Type check our own code (py39-windows-64)	2m 15s
	2h 5m 24s

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