Bump major version to 3 #36896

Job	Run time
changes	14s
Build & cache Go code	3m 10s
Ensure Go modules synchronicity	21s
Check changes to generated code	4m 44s
Lint Go code	5m 24s
Build, test & lint UI code	1m 29s
Run unit tests with -race for Go packages	9m 19s
Run unit tests for Go packages	5m 19s
Run end-to-end tests (v1.31.0, true)	30m 30s
Run end-to-end tests (v1.30.4, false)	30m 37s
Run end-to-end tests (v1.29.8, false)	31m 52s
Run end-to-end tests (v1.28.13, false)	19m 28s
E2E Tests - Composite result	1s
Process & analyze test artifacts	1m 47s
	2h 24m 15s

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