fix(ci): Specify coverage report directory for Codecov

This commit updates the CI workflow to explicitly set the `directory` for the Codecov action. This ensures the action correctly locates the `coverage.xml` file within the `promo_code` directory, resolving potential pathing issues during the upload process.

Author: RandomProgramm3r

.github/workflows/ci.yml

@@ -75,4 +75,5 @@ jobs:
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          directory: promo_code 
           fail_ci_if_error: true