Update docusaurus monorepo to v3.9.0

Author: renovate[bot]

package.json

@@ -40,9 +40,9 @@
     "react-dom": "^19.1.1"
   },
   "devDependencies": {
-    "@docusaurus/module-type-aliases": "3.8.1",
-    "@docusaurus/tsconfig": "3.8.1",
-    "@docusaurus/types": "3.8.1",
+    "@docusaurus/module-type-aliases": "3.9.0",
+    "@docusaurus/tsconfig": "3.9.0",
+    "@docusaurus/types": "3.9.0",
     "@types/react": "^19.1.9",
     "typescript": "~5.9.2"
   },