chore(deps): bump fumadocs-ui from 15.8.5 to 16.7.4

Dependabot couldn't find the original pull request head commit, f7a9da2.

Author: dependabot[bot]

apps/docs/package.json

@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "fumadocs-core": "^15.8.5",
-    "fumadocs-ui": "^15.8.5",
+    "fumadocs-ui": "^16.7.7",
     "fumadocs-mdx": "^14",
     "next": "15.5.14",
     "react": "19.1.0",