Tests

Temporarily skip few base64 tests #21594

Job	Run time
Test mypyc suite with 32-bit Python	9m 52s
mypyc runtime tests with py313-macos	4m 34s
Test suite with py310-ubuntu, mypyc-compiled	15m 12s
Parallel tests with py314-windows-64, interpreted	10m 29s
Test suite with py312-ubuntu	9m 15s
Type check our own code (py310-windows-64)	2m 30s
Parallel tests with py314-ubuntu, interpreted	23m 19s
Test suite with py314-ubuntu, mypyc-compiled	15m 10s
Test suite with py314t-ubuntu, mypyc-compiled	18m 1s
Formatting and code style with Black + ruff	1m 51s
Type check our own code (py310-ubuntu)	1m 49s
Test suite with py311-ubuntu	8m 39s
Parallel tests with py314-ubuntu, mypyc-compiled	25m 41s
Test suite with py313-ubuntu, mypyc-compiled	15m 23s
Test suite with py314-windows-64	27m 51s
mypyc runtime tests with py310-ubuntu	6m 14s
	3h 15m 50s

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