Improve async testing #1369

Job	Run time
Shellcheck	7s
Prepare	50s
Dependency	3s
Ruff check and force	10s
Check commit	44s
Create pytest cache for Python 3.13	10s
Run pytest using Python 3.13	19s
Run mypy	6s
Process test coverage	11s
Process test complexity	10s
Build and publish Python 🐍 distributions 📦 to TestPyPI	23s
	3m 13s

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