Fix GitHub Actions workflow to handle repositories without tests (#1)

* Initial plan

* Fix workflow to handle missing tests gracefully

Co-authored-by: alexpolo1 <14327609+alexpolo1@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexpolo1 <14327609+alexpolo1@users.noreply.github.com>

.github/workflows/python-app.yml

@@ -36,4 +36,4 @@ jobs:
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
-        pytest
+        pytest || [ $? = 5 ]