ensure valid json format

.github/workflows/list-templates.yml

@@ -12,6 +12,7 @@ jobs:
         id: generate-matrix
         run: |
           TEMPLATES="$(find . -not -name '.*'  -maxdepth 1 -type d | cut -f2 -d/  | sort | grep -vw chakra_apps | jq -R | jq -s -c)"
+          TEMPLATES=$(echo "$TEMPLATES" | jq -c '.') # Ensure valid JSON format
           echo "templates=$TEMPLATES" >> $GITHUB_OUTPUT
       - name: Debug output
         run: |