Tests

[mypyc] feat: make static literals immortal on Python3.14 #20124

Job	Run time
Test mypyc suite with 32-bit Python	9m 40s
Test suite with py314-windows-64	27m 3s
Parallel tests with py314-ubuntu, interpreted	23m 48s
Test suite with py313-ubuntu, mypyc-compiled	14m 43s
Type check our own code (py310-ubuntu)	1m 39s
Test suite with py310-ubuntu, mypyc-compiled	15m 8s
mypyc runtime tests with py310-ubuntu	5m 45s
Test suite with py314t-ubuntu, mypyc-compiled	18m 15s
Type check our own code (py310-windows-64)	2m 29s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 10s
mypyc runtime tests with py313-macos	6m 55s
Test suite with py311-ubuntu	9m 15s
Formatting and code style with Black + ruff	1m 51s
Test suite with py312-ubuntu	10m 19s
Test suite with py314-ubuntu, mypyc-compiled	14m 33s
	3h 9m 33s

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