Prep branch v4.15 #8141

Job	Run time
static	3m 16s
CPython 3.9-ubuntu-latest	11m 27s
CPython pypy-3.10-ubuntu-latest	12m 51s
CPython 3.13t-ubuntu-latest	11m 35s
DocTest	1m 4s
Typing Tests (3.9)	1m 2s
Link Check	2m 42s
Typing Tests (3.11)	1m 4s
Make an sdist	18s
Test using minimum dependencies and supported Python	40s
Test async's minimum dependencies and Python	47s
Docs Checks	43s
Install from SDist and Test	1m 9s
	48m 38s

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