[ci skip] Disabled dependency dashboard in Renovate config

Updated `renovate.json` to turn off the dependency dashboard feature.

Author: NonSwag

renovate.json

@@ -1,11 +1,12 @@
 {
   "extends": [
-    "config:base"
+    "config:base",
+    ":disableDependencyDashboard"
   ],
   "enabledManagers": [
     "gradle"
   ],
-  "dependencyDashboard": true,
+  "dependencyDashboard": false,
   "schedule": [
     "* 0-3 * * *"
   ],