chore: document test migration #5177

Job	Run time
Generate SDKs	3m 34s
Run tests and lints	33m 10s
Run end-to-end tests (postgres)	45m 41s
Run Playwright end-to-end tests (postgres)	6m 54s
Run end-to-end tests (cockroach)	46m 44s
Run Playwright end-to-end tests (cockroach)	7m 18s
Run end-to-end tests (sqlite)	44m 28s
Run Playwright end-to-end tests (sqlite)	6m 54s
Run end-to-end tests (mysql)	44m 12s
Run Playwright end-to-end tests (mysql)	7m 7s
Build CLI docs	1m 22s
Generate changelog	0s
Generate release	0s
Draft newsletter	0s
Render version schema	0s
Release SDKs	0s
Send newsletter	0s
Pending approval Slack notification	0s
	4h 7m 24s

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