Update actions in docs.yml

Author: franziskuskiefer

.github/workflows/docs.yml

@@ -41,10 +41,10 @@ jobs:
           done
 
       - name: Upload Documentation Artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: "docs"
 
       - name: Deploy Documentation to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4