Bump to v0.42.1, update CHANGELOG #1961

Job	Run time
Shellcheck	4s
Prepare	45s
Dependency	4s
Ruff check and force	5s
Check commit	41s
Create pytest cache for Python 3.13	10s
Run pytest using Python 3.13	23s
Process test coverage	12s
Run mypy	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	22s
Process test complexity	7s
	3m 0s

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