Tests

Emit end line/column in JSON format for span tracking #20678

Job	Run time
Test mypyc suite with 32-bit Python	9m 47s
Test suite with py313-ubuntu, mypyc-compiled	14m 7s
Test suite with py314-windows-64	26m 23s
Test suite with py311-ubuntu	8m 28s
mypyc runtime tests with py313-macos	7m 9s
Test suite with py314-ubuntu, mypyc-compiled	14m 5s
Test suite with py314t-ubuntu, mypyc-compiled	16m 13s
Parallel tests with py314-ubuntu, interpreted	23m 53s
Type check our own code (py310-windows-64)	2m 25s
Type check our own code (py310-ubuntu)	1m 48s
mypyc runtime tests with py310-ubuntu	5m 40s
Parallel tests with py314-ubuntu, mypyc-compiled	28m 57s
Test suite with py310-ubuntu, mypyc-compiled	14m 58s
Test suite with py312-ubuntu	8m 57s
Formatting and code style with Black + ruff	2m 2s
	3h 4m 52s

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