Tests

Fix debug build setup #20258

Job	Run time
Test mypyc suite with 32-bit Python	3m 57s
Test suite with py313-ubuntu, mypyc-compiled	3m 54s
Test suite with py314-ubuntu, mypyc-compiled	3m 54s
Parallel tests with py314-ubuntu, mypyc-compiled	3m 55s
Type check our own code (py310-ubuntu)	1m 40s
mypyc runtime tests with py313-macos	4m 2s
Formatting and code style with Black + ruff	1m 51s
Parallel tests with py314-ubuntu, interpreted	3m 56s
Type check our own code (py310-windows-64)	2m 37s
mypyc runtime tests with py310-ubuntu	3m 57s
Test suite with py314t-ubuntu, mypyc-compiled	3m 53s
mypyc runtime tests with py39-debug-build-ubuntu	5s
Test suite with py314-windows-64	3m 51s
Test suite with py310-ubuntu, mypyc-compiled	3m 54s
Test suite with py312-ubuntu	3m 55s
Test suite with py311-ubuntu	3m 55s
	53m 16s

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