Tests

[release 1.11] Ignore some errors in typeshed #12884

Job	Run time
Test mypyc suite with 32-bit Python	7m 20s
Test suite with py38-ubuntu, mypyc-compiled	17m 24s
Test suite with py38-windows-64	21m 7s
Test suite with py39-ubuntu	16m 39s
Test suite with py310-ubuntu	15m 45s
Test suite with py311-ubuntu, mypyc-compiled	15m 39s
Test suite with py312-ubuntu, mypyc-compiled	17m 44s
mypyc runtime tests with py39-macos	4m 19s
mypyc runtime tests with py38-debug-build-ubuntu	4m 22s
Type check our own code (py38-ubuntu)	1m 45s
Type check our own code (py38-windows-64)	2m 23s
Formatting and code style with Black + ruff	36s
	2h 5m 3s

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