Tests

Bump librt to 0.10.0 #22131

Job	Run time
Test mypyc suite with 32-bit Python	19m 33s
Test suite with py314t-ubuntu, mypyc-compiled	18m 11s
mypyc runtime tests with py313-macos	6m 55s
Parallel tests with py314-windows-64, interpreted	12m 43s
Parallel tests with py314-ubuntu, mypyc-compiled	27m 8s
Test suite with py312-ubuntu	9m 52s
Formatting and code style with Black + ruff	2m 6s
Type check our own code (py310-ubuntu)	1m 25s
mypyc runtime tests with py310-ubuntu	5m 39s
Test suite with py311-ubuntu	9m 30s
Type check our own code (py310-windows-64)	1m 45s
Test suite with py314-windows-64	31m 28s
Test suite with py313-ubuntu, mypyc-compiled	16m 31s
Test suite with py310-ubuntu, mypyc-compiled	16m 46s
Test suite with py314-ubuntu, mypyc-compiled	15m 39s
Parallel tests with py314-ubuntu, interpreted	27m 13s
	3h 42m 24s

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