fix action

Author: Freymaurer

.github/workflows/docs-deploy.yml

@@ -32,7 +32,7 @@ jobs:
         working-directory: ./docs
 
       - name: Upload Build Artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: github-pages
           path: docs/build