fix(deps): update docusaurus monorepo to v3.9.2

Author: renovate[bot]

site/package.json

@@ -17,8 +17,8 @@
     "format": "prettier . --write"
   },
   "dependencies": {
-    "@docusaurus/core": "3.8.1",
-    "@docusaurus/preset-classic": "3.8.1",
+    "@docusaurus/core": "3.9.2",
+    "@docusaurus/preset-classic": "3.9.2",
     "@mdx-js/react": "^3.0.0",
     "clsx": "^2.0.0",
     "prism-react-renderer": "^2.3.0",