Tests

[mypyc] Implement bytes.endswith #19826

Job	Run time
Test mypyc suite with 32-bit Python	9m 8s
Test suite with py312-ubuntu	9m 56s
Test suite with py314-ubuntu, mypyc-compiled	13m 26s
Type check our own code (py310-ubuntu)	1m 38s
mypyc runtime tests with py313-macos	4m 31s
Test suite with py313-ubuntu, mypyc-compiled	13m 41s
Test suite with py310-ubuntu, mypyc-compiled	14m 12s
Test suite with py314t-ubuntu, mypyc-compiled	16m 6s
Test suite with py311-ubuntu	9m 8s
Parallel tests with py314-ubuntu, interpreted	22m 9s
Test suite with py314-windows-64	26m 41s
mypyc runtime tests with py310-ubuntu	5m 16s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 36s
Type check our own code (py310-windows-64)	2m 22s
Formatting and code style with Black + ruff	1m 59s
	2h 58m 49s

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