Tests

Bump librt to 0.10.0 (#21415) #22132

Job	Run time
Test mypyc suite with 32-bit Python	14m 47s
Parallel tests with py314-ubuntu, interpreted	26m 33s
Parallel tests with py314-windows-64, interpreted	12m 1s
Test suite with py313-ubuntu, mypyc-compiled	15m 20s
Test suite with py312-ubuntu	10m 12s
Test suite with py311-ubuntu	8m 59s
Formatting and code style with Black + ruff	2m 11s
Type check our own code (py310-windows-64)	2m 24s
Test suite with py314-windows-64	30m 19s
mypyc runtime tests with py313-macos	5m 24s
Type check our own code (py310-ubuntu)	1m 19s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 15s
mypyc runtime tests with py310-ubuntu	6m 39s
Test suite with py314-ubuntu, mypyc-compiled	15m 41s
Test suite with py314t-ubuntu, mypyc-compiled	18m 22s
Test suite with py310-ubuntu, mypyc-compiled	16m 23s
	3h 34m 49s

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