[ci] Use a token to upload codecov reports

Fixes #68

Author: vgvassilev

.github/workflows/main.yml

@@ -137,6 +137,9 @@ jobs:
         uses: codecov/codecov-action@v4
         with:
           file: ./coverage.info
+          fail_ci_if_error: true
+          verbose: true
+          token: ${{ secrets.CODECOV_TOKEN }}
 
       - name: Setup tmate session
         if: ${{ failure() && runner.debug }}