v15.4.1 release notes #423

Job	Run time
Test Windows (windows-latest, 3.10)	8m 21s
Test ubuntu-22.04 with Python 3.9	5m 17s
Build sdist and wheels	40s
Test macOS (macos-latest, 3.10)	6m 40s
Test macOS (macos-latest, 3.11)	8m 46s
Test Windows (windows-latest, 3.11)	7m 32s
Test ubuntu-22.04 with Python 3.10	7m 36s
Test Windows (windows-latest, 3.12)	11m 10s
Test macOS (macos-latest, 3.12)	9m 23s
Test ubuntu-22.04 with Python 3.11	4m 51s
Test ubuntu-22.04 with Python 3.9	6m 24s
Test ubuntu-latest with Python 3.12	8m 50s
Build Ubuntu-based Docker image	9m 51s
Build Alpine-based Docker images	1m 8s
Deploy artifacts to PyPI	26s
Create GitHub release	7s
	1h 37m 2s

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