Tests

Use WAL with SQLite cache, fix close #21514

Job	Run time
Test mypyc suite with 32-bit Python	10m 40s
Test suite with py312-ubuntu	10m 39s
Test suite with py314-ubuntu, mypyc-compiled	15m 58s
Test suite with py314t-ubuntu, mypyc-compiled	20m 30s
Test suite with py311-ubuntu	9m 35s
Test suite with py310-ubuntu, mypyc-compiled	16m 34s
Parallel tests with py314-windows-64, interpreted	9m 57s
Test suite with py314-windows-64	27m 32s
mypyc runtime tests with py310-ubuntu	6m 39s
Test suite with py313-ubuntu, mypyc-compiled	16m 12s
Formatting and code style with Black + ruff	1m 51s
Parallel tests with py314-ubuntu, interpreted	25m 9s
mypyc runtime tests with py313-macos	5m 57s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 22s
Type check our own code (py310-ubuntu)	1m 46s
Type check our own code (py310-windows-64)	2m 18s
	3h 28m 39s

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