Update CHANGELOG for v1.8.2 release #5824

Job	Run time
Dependency	3s
Cache identify	16s
Shellcheck	4s
Prepare	24s
Ruff check and force	16s
Check commit	34s
Run pytest using Python 3.14	22s
Run pytest using Python 3.13	23s
Run mypy	25s
Process test coverage	21s
Process test complexity	17s
Build and publish Python 🐍 distributions 📦 to TestPyPI	12s
	3m 37s

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