fix(deps): update docusaurus monorepo to v3.9.1

Author: renovate[bot]

website/package.json

@@ -21,9 +21,9 @@
   },
   "dependencies": {
     "@algolia/ui-library": "9.16.1",
-    "@docusaurus/core": "3.8.0",
-    "@docusaurus/preset-classic": "3.8.0",
-    "@docusaurus/types": "3.8.0",
+    "@docusaurus/core": "3.9.1",
+    "@docusaurus/preset-classic": "3.9.1",
+    "@docusaurus/types": "3.9.1",
     "@mdx-js/react": "3.1.1",
     "clsx": "2.1.1",
     "react": "19.2.0",