chore(deps): bump next from 14.2.15 to 14.2.21

Bumps [next](https://github.com/vercel/next.js) from 14.2.15 to 14.2.21.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.15...v14.2.21)

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

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

apps/documentation/package.json

@@ -21,7 +21,7 @@
     "@remixicon/react": "^4.2.0",
     "@shoelace-style/shoelace": "^2.14.0",
     "clsx": "^2.1.0",
-    "next": "^14.1.3",
+    "next": "^14.2.21",
     "nextra": "^2.13.4",
     "nextra-theme-docs": "^2.13.4",
     "react": "^18.2.0",