chore: update CHANGELOG for version 4.8.2 #468

Job	Run time
E2E smoke	1m 32s
Lint	1m 25s
Backend tests (Python 3.14) - Shard 2 / 4	5m 7s
Localization tests	59s
Headless Self-Check (windows-latest)	3m 37s
Visualiser WASM (Go)	24s
Backend tests (Python 3.14) - Shard 3 / 4	5m 1s
Headless Self-Check (ubuntu-latest)	48s
Backend tests (Python 3.14) - Shard 0 / 4	5m 4s
Build frontend artifact / Build frontend artifact	56s
Headless Self-Check (macos-latest)	41s
Frontend tests	3m 14s
Backend tests (Python 3.14) - Shard 1 / 4	4m 13s
Linux build check	1m 36s
Native build (${{ matrix.label }})	-1s
Validate Linux build artifact	22s
	34m 58s

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