ci: fix code coverage (#100)

Author: g105b

.github/workflows/ci.yml

@@ -97,6 +97,7 @@ jobs:
         uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+          slug: ${{ github.repository }}
 
   phpstan:
     runs-on: ubuntu-latest