fix: upload cypress screen to debug

Author: TheauW

.github/workflows/diracx-web-test.yml

@@ -61,4 +61,11 @@ jobs:
       with:
         browser: chrome
         config: baseUrl=${{ env.DIRACX_URL }}
-        project: packages/diracx-web
+        project: packages/diracx-web
+
+    - name: Upload Cypress screenshots
+      if: failure()  
+      uses: actions/upload-artifact@v4
+      with:
+        name: cypress-screenshots
+        path: packages/diracx-web/cypress/screenshots