add token for codecov

Author: itsdfish

.github/workflows/CI.yml

@@ -42,7 +42,9 @@ jobs:
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5
         with:
-          file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }} # required
+          fail_ci_if_error: true
+          files: lcov.info
   docs:
     name: Documentation
     runs-on: ubuntu-latest