Extract build output explicitly (BLD-6874)

Author: siong-chin

.github/workflows/build-conquest-python.yml

@@ -85,7 +85,7 @@ jobs:
 
       - name: Build conquest python
         run: |
-          output=$(${{ needs.setup.outputs.python }} build_conquest_python.py | tail -n 1)
+          output=$(${{ needs.setup.outputs.python }} build_conquest_python.py | grep Creating | tail -n 1)
           archive_filename=$(echo $output | awk '{print $2}')
           archive_path=$(echo $output | awk '{print $NF}')
           echo "archive_filename=$archive_filename" >> $GITHUB_ENV