fix upload

.github/workflows/ci-cd.yml

@@ -73,18 +73,19 @@ jobs:
       run: |
         python -m pip install coverage codecov
     - name: Download coverage artifacts
-      run: |
-        for version in 2.7 3.7 3.8 3.9 3.10 3.11 3.12; do
-          echo "Downloading coverage for Python $version"
-          actions/download-artifact@v4 --name coverage-$version --path ./coverage/$version
-        done
+      uses: actions/download-artifact@v4
+      with:
+        pattern: coverage-*
+        path: ./coverage
+        merge-multiple: true
     - name: Combine coverage reports
       run: |
+        ls -lash
         coverage combine ./coverage
         coverage report
         coverage xml
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         file: ./coverage.xml
   mypy: