build(deps): bump next from 15.4.7 to 15.4.8 in /docs-ui

Bumps [next](https://github.com/vercel/next.js) from 15.4.7 to 15.4.8.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/compare/v15.4.7...v15.4.8)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.4.8
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

docs-ui/package.json

@@ -32,7 +32,7 @@
     "clsx": "^2.1.1",
     "html-react-parser": "^5.2.5",
     "motion": "^12.4.1",
-    "next": "15.4.7",
+    "next": "15.4.8",
     "next-mdx-remote-client": "^2.1.2",
     "prop-types": "^15.8.1",
     "react": "19.1.1",