Adding maven registries for renovates

renovate.json

@@ -2,5 +2,15 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "local>3dwardch3ng/renovate-config"
+  ],
+  "packageRules": [
+    {
+      "matchDatasources": ["maven"],
+      "registryUrls": [
+        "https://nexus.cluster.edward.sydney/repository/maven-releases",
+        "https://nexus.cluster.edward.sydney/repository/maven-snapshots",
+        "https://repo.maven.apache.org/maven2"
+      ]
+    }
   ]
 }