chore: Add replicasets to RBAC for informer cache (#823)

Syncs RBAC changes with core: kedacore/keda#7466

This adds list/watch permissions for ReplicaSets to enable the informer
cache optimization when targeting ReplicaSets directly with ScaledObjects.

Signed-off-by: Matt Sheppard <matthewlouissheppard@gmail.com>

Author: mattshep

keda/templates/manager/clusterrole.yaml

@@ -100,6 +100,7 @@ rules:
   - apps
   resources:
   - deployments
+  - replicasets
   - statefulsets
   verbs:
   - get