Update Codecov upload step in CI workflow

Author: MoshPe

.github/workflows/ci.yml

@@ -27,9 +27,7 @@ jobs:
               clean verify \
               -Dgpg.skip=true
 
-      - name: Upload coverage to Codecov
+      - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5
         with:
-          files: streamfence-core/target/site/jacoco/jacoco.xml
-          flags: unittests
-          fail_ci_if_error: false
+              token: ${{ secrets.CODECOV_TOKEN }}