List downloaded artifacts in release workflow

Author: benfrancis

.github/workflows/release.yml

@@ -69,6 +69,8 @@ jobs:
       uses: actions/download-artifact@v4
       with:
         name: upload_url
+    - name: Display structure of downloaded files
+      run: ls -R
     - name: Set upload_url
       run: echo "UPLOAD_URL=$(cat upload_url/upload_url)" >> $GITHUB_ENV
     - name: Set release version