chore: update renovate configuration to disable auth0mock updates

Adds a package rule in the Renovate configuration to disable updates for the 
`auth0mock` package managed by Kubernetes. This change ensures that 
unwanted updates are prevented, maintaining compatibility and stability 
within the project.

renovate.json

@@ -2,5 +2,16 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "matchManagers": [
+        "kubernetes"
+      ],
+      "matchPackageNames": [
+        "registry.gitlab.com/unboundsoftware/auth0mock"
+      ],
+      "enabled": false
+    }
   ]
 }