Fix path for v4 of upload

Author: Victor Bajada

.github/workflows/ci.yml

@@ -120,7 +120,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: coverage-data-${{ matrix.python-version }}
-          path: .coverage.${{ matrix.python-version }}
+          path: ${{ github.workspace }}/.coverage.${{ matrix.python-version }}
           if-no-files-found: warn
 
   coverage: