Fix codecov

Author: benjie

.github/workflows/ci.yml

@@ -101,10 +101,11 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: ${{ always() }}
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v4
         with:
           file: ./coverage/coverage-final.json
           fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   test:
     name: Run tests on Node v${{ matrix.node_version_to_setup }}