Fix CI (update artifact version)

Author: Milan Barta

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
         run: ./gradlew testRelease
 
       - name: Archive test results
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: test-results-report