Update rbac to support the new events.k8s.io api

Mateorequested to merge
76-workload-cluster-operator-can-t-patch-events-correctly into main

This MR add the RBAC annotation for patching events from the new api group events.k8s.io.

e2e tests didn't catch this because the controller runs as a local process and uses the kubeconfig which is by default admin so rbac is never enforced.

Closes #76 (closed)

Edited by Mateo

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