upload failed tests for examination

.github/workflows/test.yml

@@ -62,5 +62,12 @@ jobs:
           git config --local user.email "${GITHUB_ACTOR}@users.noreply.github.com"
           git add example.pdf
           (git commit -m "Recreate example.pdf  [skip ci]" && git pull --rebase && git push origin) || echo "No changes to commit"
-                    
+
+      - name: Upload test results
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-failures
+          path: *.png
+
       - run: echo "🍏 This job's status is ${{ job.status }}."