Fail CI on Codecov uploads from tests

Author: webknjaz

.github/workflows/ci-cd.yml

@@ -362,6 +362,7 @@ jobs:
     - name: Send coverage data to Codecov
       uses: codecov/codecov-action@v4
       with:
+        fail_ci_if_error: true
         files: coverage.xml
         flags: >-
           CI-GHA,