Migrate to serialx #3403

Job	Run time
Cache identify	8s
Shellcheck	5s
Dependency	4s
Prepare	8s
Ruff check and force	7s
Check commit	33s
Run pytest using Python 3.14	19s
Process test coverage	-1s
Run mypy	-1s
Build and publish Python 🐍 distributions 📦 to TestPyPI	0s
Process test complexity	0s
	1m 22s

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