chore(deps): bump next from 14.2.4 to 15.2.4

Bumps [next](https://github.com/vercel/next.js) from 14.2.4 to 15.2.4.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.4...v15.2.4)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.2.4
  dependency-type: direct:production
...

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

Author: dependabot[bot]

docs/package.json

@@ -19,7 +19,7 @@
     "gray-matter": "^4.0.3",
     "i18next": "23.11.5",
     "lodash": "^4.17.21",
-    "next": "14.2.4",
+    "next": "15.2.4",
     "next-i18next": "15.3.0",
     "prism-react-renderer": "^1.2.1",
     "react": "^18.3.1",