Update rbac.yaml for fix invalid yaml

The RBAC is missing one line. When using kustomize:

Error: map[string]interface {}(nil): yaml: unmarshal errors:
  line 19: mapping key "resources" already defined at line 17
  line 20: mapping key "verbs" already defined at line 18

deploy/helm/seaweedfs-csi-driver/templates/rbac.yaml

@@ -169,6 +169,7 @@ rules:
   - apiGroups: [""]
     resources: ["nodes"]
     verbs: ["get", "list", "watch"]
+  - apiGroups: [""]
     resources: ["persistentvolumes"]
     verbs: ["get", "list", "watch","update","patch"]