[ci] Update renovate.json

[skip ci]

Author: VietND96

renovate.json

@@ -2,5 +2,15 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "packageNames": ["selenium/standalone-firefox"],
+      "enabled": false
+    },
+    {
+      "packageNames": ["selenium/node-firefox"],
+      "enabled": false
+    }
   ]
 }