Bump next in /frontend in the npm_and_yarn group across 1 directory (#9632)

Bumps the npm_and_yarn group with 1 update in the /frontend directory: [next](https://github.com/vercel/next.js).


Updates `next` from 15.5.2 to 15.5.7
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](https://github.com/vercel/next.js/compare/v15.5.2...v15.5.7)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.7
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

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

frontend/package.json

@@ -43,7 +43,7 @@
     "lucide-react": "^0.554.0",
     "mini-svg-data-uri": "^1.4.4",
     "motion": "^12.23.12",
-    "next": "15.5.2",
+    "next": "15.5.7",
     "next-themes": "^0.4.4",
     "nuqs": "^2.4.1",
     "prettier-plugin-organize-imports": "^4.1.0",