Tests

[mypyc] feat: add ascii format fast path #20287

Job	Run time
Test suite with py312-ubuntu	9m 40s
Test mypyc suite with 32-bit Python	9m 35s
mypyc runtime tests with py310-ubuntu	5m 40s
Type check our own code (py310-ubuntu)	1m 39s
Test suite with py311-ubuntu	9m 32s
Parallel tests with py314-ubuntu, interpreted	25m 21s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 21s
Test suite with py313-ubuntu, mypyc-compiled	14m 51s
Test suite with py310-ubuntu, mypyc-compiled	15m 26s
Test suite with py314t-ubuntu, mypyc-compiled	17m 35s
Test suite with py314-windows-64	24m 28s
Test suite with py314-ubuntu, mypyc-compiled	14m 59s
mypyc runtime tests with py313-macos	6m 50s
Type check our own code (py310-windows-64)	3m 5s
Formatting and code style with Black + ruff	1m 48s
	3h 8m 50s

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