Bump next from 14.2.22 to 15.2.1

Bumps [next](https://github.com/vercel/next.js) from 14.2.22 to 15.2.1.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.22...v15.2.1)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -29,7 +29,7 @@
     "geist": "^1.3.1",
     "gray-matter": "^4.0.3",
     "lucide-react": "^0.471.0",
-    "next": "14.2.22",
+    "next": "15.2.1",
     "next-mdx-remote": "^5.0.0",
     "next-themes": "0.3.0",
     "react": "^18.3.1",