Update dependabot.yml

Author: srm09

.github/dependabot.yml

@@ -21,7 +21,9 @@ updates:
   # together with controller-runtime and CAPI dependencies.
   - dependency-name: "k8s.io/*"
   - dependency-name: "sigs.k8s.io/*"
+  - dependency-name: "sigs.k8s.io/cluster-api/test"
+    update-types: ["version-update:semver-major", "version-update:semver-minor"]
   commit-message:
     prefix: ":seedling:"
   labels:
-    - "ok-to-test"
+    - "ok-to-test"