ci: update tests.yml

Author: mhanberg

.github/workflows/tests.yml

@@ -39,7 +39,7 @@ jobs:
 
       - name: Upload bottles as artifact
         if: always() && github.event_name == 'pull_request'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: bottles
           path: '*.bottle.*'