Fix make dev on master (#5282)

- Add CI action to validate that future bump PRs don't break dev mode

Signed-off-by: Sebastian Malton <sebastian@malton.name>

.github/workflows/test.yml

@@ -67,6 +67,10 @@ jobs:
       - run: make test-extensions
         name: Run In-tree Extension tests
 
+      - run: make ci-validate-dev
+        if: ${{ contains(github.event.pull_request.labels.*.name, 'dependencies') }}
+        name: Validate dev mode will work
+
       - name: Install integration test dependencies
         id: minikube
         uses: medyagh/setup-minikube@5a9a7104d7322fa40424de8855c84685e89cefd7