fix code cov (#150)

turns out the dependabot missed the fact that secrets are now needed.

Author: oscardssmith

.github/workflows/CI.yml

@@ -28,6 +28,8 @@ jobs:
       - uses: codecov/codecov-action@v4
         with:
           file: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
 
   docs:
     name: Documentation