fix: checkout cluster repo

Author: andhrelja

.github/workflows/k8s_test.yml

@@ -32,6 +32,7 @@ jobs:
       uses: actions/checkout@v4
       with:
         repository: ${{ github.repository_owner }}/${{ env.KUBERNETES_CLUSTER_REPO_NAME }}
+        ref: refs/heads/dev
 
     - name: GitHub Configuration
       run: git config --global url."https://oauth2:${{ secrets.TOKEN_GITHUB }}@github.com".insteadOf https://github.com