chore(deps): bump next from 15.0.3 to 15.1.2 in /apps/changelog

Bumps [next](https://github.com/vercel/next.js) from 15.0.3 to 15.1.2.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.0.3...v15.1.2)

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

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

apps/changelog/package.json

@@ -26,7 +26,7 @@
     "@radix-ui/themes": "^3.1.3",
     "@sentry/nextjs": "8.36.0",
     "@spotlightjs/spotlight": "^2.1.1",
-    "next": "15.0.3",
+    "next": "15.1.2",
     "next-auth": "^4.24.5",
     "next-mdx-remote": "^4.4.1",
     "nextjs-toploader": "^1.6.6",