Bump next from 15.5.12 to 15.5.14 (#611)

Bumps [next](https://github.com/vercel/next.js) from 15.5.12 to 15.5.14.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.5.12...v15.5.14)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.14
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
     "@vercel/analytics": "^1.6.1",
     "clsx": "^2.1.1",
     "gray-matter": "^4.0.3",
-    "next": "15.5.12",
+    "next": "15.5.14",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "rehype-pretty-code": "^0.14.3",