chore(deps): bump next from 15.3.0 to 15.5.9

Bumps [next](https://github.com/vercel/next.js) from 15.3.0 to 15.5.9.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.3.0...v15.5.9)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.9
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -19,7 +19,7 @@
     "canvas-confetti": "^1.9.3",
     "clsx": "^2.1.1",
     "ioredis": "^5.7.0",
-    "next": "15.3.0",
+    "next": "15.5.9",
     "next-sitemap": "^4.2.3",
     "nextjs-google-analytics": "^2.3.7",
     "react": "19.0.0",