Bump version to 2.11.12 (#20669) #34673

Job	Run time
changes	10s
Check changes to generated code	8m 55s
Ensure Go modules synchronicity	2m 51s
Build & cache Go code	5m 11s
Lint Go code	6m 48s
Build, test & lint UI code	0s
Run unit tests with -race for Go packages	7m 58s
Run unit tests for Go packages	4m 43s
Run end-to-end tests (v1.29.1)	44m 30s
Run end-to-end tests (v1.28.6)	47m 1s
Run end-to-end tests (v1.27.10)	44m 55s
Run end-to-end tests (v1.26.13)	18m 56s
Run end-to-end tests (v1.25.16)	13m 22s
Process & analyze test artifacts	0s
E2E Tests - Composite result	1s
	3h 25m 21s

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