PYTHON-5542 Prepare for 4.15.1 Release #8181

Job	Run time
Docs Checks	42s
DocTest	1m 2s
CPython 3.9-ubuntu-latest	11m 27s
CPython pypy-3.10-ubuntu-latest	12m 29s
Link Check	1m 40s
Make an sdist	18s
Test async's minimum dependencies and Python	43s
static	4m 20s
Typing Tests (3.9)	1m 2s
Test using minimum dependencies and supported Python	38s
CPython 3.13t-ubuntu-latest	11m 33s
Typing Tests (3.11)	59s
Install from SDist and Test	47s
	47m 40s

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