doc: adds vals-operator to secrets list (#11795) #9

Job	Run time
Ensure Go modules synchronicity	5m 9s
Build & cache Go code	6m 47s
Check changes to generated code	13m 17s
Build, test & lint UI code	3m 3s
Lint Go code	2m 22s
Run unit tests for Go packages	7m 49s
Run end-to-end tests (v1.27.2)	35m 19s
Run unit tests with -race for Go packages	12m 3s
Run end-to-end tests (v1.26.0)	34m 59s
Run end-to-end tests (v1.25.4)	35m 19s
Run end-to-end tests (v1.24.3)	35m 18s
Process & analyze test artifacts	23s
	3h 11m 48s

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