⬆️ Bump next from 14.2.7 to 14.2.15 in /apps/playground

Bumps [next](https://github.com/vercel/next.js) from 14.2.7 to 14.2.15.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.7...v14.2.15)

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

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

apps/playground/package.json

@@ -12,7 +12,7 @@
     "@xionwcfm/token": "^0.0.6",
     "@xionwcfm/utils": "^0.0.2",
     "@xionwcfm/xds": "^0.0.7",
-    "next": "14.2.7",
+    "next": "14.2.15",
     "react": "catalog:react18",
     "react-dom": "catalog:react18"
   },