build(deps): bump next from 15.4.5 to 15.4.7 in /apps/docs

Bumps [next](https://github.com/vercel/next.js) from 15.4.5 to 15.4.7.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.4.5...v15.4.7)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.4.7
  dependency-type: direct:production
...

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

Author: dependabot[bot]

apps/docs/package.json

@@ -29,7 +29,7 @@
     "fumadocs-ui": "14.7.2",
     "lucide-react": "^0.471.1",
     "nativewind": "^4.2.1",
-    "next": "15.3.2",
+    "next": "15.4.7",
     "qrcode.react": "^4.2.0",
     "raf": "^3.4.1",
     "react": "19.1.0",