build: follow the org's codecov-action pattern

Follow the codecov-action pattern established in
https://openedx.atlassian.net/wiki/spaces/COMM/pages/3438280709/Adding+Codecov.

Author: arbrandes

.github/workflows/ci.yml

@@ -31,5 +31,6 @@ jobs:
       run: npm run i18n_extract
     - name: Coverage
       uses: codecov/codecov-action@v4
-      env:
-        CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
+        fail_ci_if_error: true