build(deps): bump next from 14.2.15 to 14.2.26 in /documentation/docs (#5772)

Bumps [next](https://github.com/vercel/next.js) from 14.2.15 to 14.2.26.
- [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/v14.2.15...v14.2.26)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 14.2.26
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

documentation/docs/package.json

@@ -45,7 +45,7 @@
     "chain-registry": "^1.19.0",
     "cosmjs-types": "^0.9.0",
     "lucide-react": "^0.438.0",
-    "next": "^14.2.15",
+    "next": "^15.2.4",
     "nextra": "2",
     "nextra-theme-docs": "2",
     "react": "^18.2.0",