Add a debug job

Author: lucianopaz

.github/workflows/pypi.yml

@@ -47,6 +47,11 @@ jobs:
               - 'pytensor/_version.py'
               - 'pytensor/scan_perform.pyx'
               - 'pytensor/scan_perform_ext.py'
+  print_check_changes_output:
+    runs-on: ubuntu-latest
+    needs: check_changes
+    steps:
+      - run: echo "should_run: ${{ needs.check_changes.outputs.should_run }}"
 
   # The job to build precompiled pypi wheels.
   make_sdist: