give nifi dashboard a different id

Author: sbernauer

stacks/monitoring/grafana-dashboards.yaml

@@ -13141,7 +13141,7 @@ data:
       "timepicker": {},
       "timezone": "",
       "title": "NiFi",
-      "uid": "C_8qIX04k",
+      "uid": "C_8qIX04l",
       "version": 13
     }
 # {% endraw %}