Use non deprecated upload-artifact version

Author: jfaltermeier

.github/workflows/e2e-tests.yml

@@ -158,7 +158,7 @@ jobs:
 
       - name: Upload Playwright test failure screenshots
         if: failure()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test-failure-screenshots
           path: theia-cloud/node/e2e-tests/test-results/**/*.png