Tests

Bump librt to 0.13.0 #22676

Job	Run time
Test suite with py310-ubuntu, mypyc-compiled	16m 56s
Test suite with py312-ubuntu	10m 30s
mypyc runtime tests with py313-macos	7m 44s
Test suite with py311-ubuntu	10m 2s
Formatting and code style with Black + ruff	1m 51s
Test suite with py314-windows-64	34m 31s
Test suite with py314t-ubuntu, mypyc-compiled	18m 15s
mypyc runtime tests with py310-ubuntu	8m 12s
Test suite with py315-ubuntu, mypyc-compiled	15m 55s
Type check our own code (py310-ubuntu)	1m 7s
Parallel tests with py314-windows-64, interpreted	11m 17s
Test suite with py314-ubuntu, mypyc-compiled	15m 55s
Test suite with py313-ubuntu, mypyc-compiled	16m 18s
Parallel tests with py314-ubuntu, mypyc-compiled	30m 38s
Parallel tests with py314-ubuntu, interpreted	27m 23s
Test mypyc suite with 32-bit Python	11m 8s
Type check our own code (py310-windows-64)	2m 7s
	3h 59m 49s

Provide feedback