Update link-checker.yml

.github/workflows/link-checker.yml

@@ -36,4 +36,24 @@ jobs:
       - name: Parse through allow-listed URLs
         run: |
           ls
+          python --version
+          python ./build_steps/linkchecker_filter_out_allowed_urls.py
           cat linkchecker_raw_output.csv
+          cat linkchecker_filtered_output.csv
+
+      - name: Read and validate filtered CSV
+        run: |
+          # Read the filtered CSV file
+          csv_content=$(<linkchecker_filtered_output.csv)
+          
+          # Print the contents of the CSV
+          echo "Filtered CSV content:"
+          echo "$csv_content"
+          
+          # Check if CSV content is empty
+          if [ -z "$csv_content" ]; then
+            echo "No URLs found in the filtered CSV."
+          else
+            echo "Error: URLs found in the filtered CSV."
+            exit 1
+          fi