Update actions/upload-pages-artifact action to v4 (#1494)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/gh-pages.yml

@@ -26,7 +26,7 @@ jobs:
 
       - name: Upload static files as artifact
         id: deployment
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: docs-app/.vitepress/dist