Backports for 1.11.2 #13067

Job	Run time
Test suite with py38-ubuntu, mypyc-compiled	17m 35s
Test suite with py38-windows-64	19m 27s
Test mypyc suite with 32-bit Python	7m 16s
Test suite with py39-ubuntu	16m 20s
Test suite with py310-ubuntu	15m 38s
Test suite with py311-ubuntu, mypyc-compiled	15m 41s
Test suite with py312-ubuntu, mypyc-compiled	18m 25s
mypyc runtime tests with py39-macos	5m 10s
mypyc runtime tests with py38-debug-build-ubuntu	4m 28s
Type check our own code (py38-ubuntu)	1m 48s
Type check our own code (py38-windows-64)	2m 31s
Formatting and code style with Black + ruff	37s
	2h 4m 56s

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