Update rbac.yaml to give the controller "create" permission on leases

The current helm chart does not grant the controller the appropriate "create" permission on leases for leader election to work.

deploy/charts/external-secrets/templates/rbac.yaml

@@ -139,6 +139,7 @@ rules:
     - "leases"
     verbs:
     - "get"
+    - "create"
     - "update"
     - "patch"
 ---