Tests

Update changelog for 1.20.1 (#21205) #21659

Job	Run time
Test mypyc suite with 32-bit Python	10m 33s
Test suite with py310-ubuntu, mypyc-compiled	16m 30s
Test suite with py311-ubuntu	9m 11s
Test suite with py314-ubuntu, mypyc-compiled	15m 10s
Formatting and code style with Black + ruff	1m 59s
mypyc runtime tests with py313-macos	4m 28s
Test suite with py313-ubuntu, mypyc-compiled	15m 14s
Test suite with py312-ubuntu	9m 22s
Parallel tests with py314-ubuntu, interpreted	25m 32s
Parallel tests with py314-ubuntu, mypyc-compiled	25m 58s
Test suite with py314t-ubuntu, mypyc-compiled	17m 43s
mypyc runtime tests with py310-ubuntu	6m 24s
Type check our own code (py310-windows-64)	2m 33s
Type check our own code (py310-ubuntu)	1m 34s
Parallel tests with py314-windows-64, interpreted	9m 46s
Test suite with py314-windows-64	25m 47s
	3h 17m 44s

Provide feedback