fix(deps): update dependency fumadocs-ui to v16

Author: renovate[bot]

package.json

@@ -20,7 +20,7 @@
     "fumadocs-openapi": "^9.3.8",
     "fumadocs-twoslash": "^3.1.0",
     "fumadocs-typescript": "^4.0.4",
-    "fumadocs-ui": "^15.7.11",
+    "fumadocs-ui": "^16.0.0",
     "lucide-react": "^0.552.0",
     "next": "15.5.6",
     "prettier": "^3.6.2",