fix: upload-artifacts v6

Author: ndaba1

.github/workflows/ci.yml

@@ -73,7 +73,7 @@ jobs:
           CODECOV_TOKEN: ${{secrets.CODECOV_TOKEN}}
 
       - name: Upload coverage artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v6
         with:
           name: coverage
           path: coverage