Add Codecov token (#31)

* Add Codecov token

* Fix CI formatting

* MIssing bracket

* Allow failures

Author: gdalle

.github/workflows/CI.yml

@@ -43,6 +43,8 @@ jobs:
       - uses: codecov/codecov-action@v4
         with:
           files: lcov.info
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: false
   docs:
     name: Documentation
     runs-on: ubuntu-latest