Fix manifest creation caused by missing linebreaks

Author: elivlo

.github/workflows/release.yaml

@@ -128,15 +128,15 @@ jobs:
       - name: Create manifest
         run: |
           VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,' | sed -e 's/^v//')
-          echo "---" >> manifest.yaml
+          printf "---\n" >> manifest.yaml
           cat deploy/k8s/rbac.yaml >> manifest.yaml
-          echo "---" >> manifest.yaml
+          printf "---\n" >> manifest.yaml
           cat deploy/k8s/csidriver.yaml >> manifest.yaml
-          echo "---" >> manifest.yaml
+          printf "---\n" >> manifest.yaml
           sed -E "s|(image: +${REGISTRY_NAME}/cloudstack-csi-driver)(:[^ ]+)?|\\1:${VERSION}|" deploy/k8s/controller-deployment.yaml >> manifest.yaml
-          echo "---" >> manifest.yaml
+          printf "---\n" >> manifest.yaml
           sed -E "s|(image: +${REGISTRY_NAME}/cloudstack-csi-driver)(:[^ ]+)?|\\1:${VERSION}|" deploy/k8s/node-daemonset.yaml >> manifest.yaml
-          echo "---" >> manifest.yaml
+          printf "---\n" >> manifest.yaml
           cat deploy/k8s/volume-snapshot-class.yaml >> manifest.yaml
 
       - name: Create Release