Changelog for 1.13 (#18000) #462

Job	Run time
Test mypyc suite with 32-bit Python	7m 20s
Test suite with py38-ubuntu, mypyc-compiled	18m 42s
Test suite with py38-windows-64	21m 38s
Test suite with py39-ubuntu	16m 31s
Test suite with py310-ubuntu	15m 48s
Test suite with py311-ubuntu, mypyc-compiled	15m 33s
Test suite with py312-ubuntu, mypyc-compiled	17m 46s
Test suite with py313-ubuntu, mypyc-compiled	18m 13s
mypyc runtime tests with py39-macos	5m 16s
Type check our own code (py38-ubuntu)	1m 53s
Type check our own code (py38-windows-64)	2m 31s
Formatting and code style with Black + ruff	33s
	2h 21m 44s

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