Upgrade upload-artifact to v4

Author: jfdenise

.github/workflows/main.yml

@@ -256,7 +256,7 @@ jobs:
           fi
           popd
       - name: Upload Test Reports on Failure
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         if: failure()
         with:
           name: wildfly-s2i-test-logs-${{ matrix.os }}-${{ matrix.jdk }}