Bump to b3 for testing #1792

Job	Run time
Prepare	48s
Shellcheck	5s
Dependency	3s
Ruff check and force	7s
Check commit	37s
Create pytest cache for Python 3.13	7s
Run pytest using Python 3.13	24s
Run mypy	9s
Process test coverage	11s
Process test complexity	7s
Build and publish Python 🐍 distributions 📦 to TestPyPI	19s
	2m 57s

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