Remove 3.13 testing #5848

Job	Run time
Shellcheck	7s
Cache identify	5s
Dependency	6s
Prepare	1m 17s
Ruff check and force	10s
Check commit	25s
Run pytest using Python 3.14	17s
Run mypy	12s
Process test coverage	13s
Build and publish Python 🐍 distributions 📦 to TestPyPI	10s
Process test complexity	9s
	3m 11s

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