chore(deps-dev): bump eslint-config-next from 15.5.18 to 16.2.9

Bumps [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next) from 15.5.18 to 16.2.9.
- [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/commits/v16.2.9/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: eslint-config-next
  dependency-version: 16.2.7
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

examples/arbitrum-london/package.json

@@ -39,7 +39,7 @@
     "@types/react-dom": "^19",
     "@vitejs/plugin-react-swc": "^4.3.1",
     "eslint": "^9",
-    "eslint-config-next": "15.5.18",
+    "eslint-config-next": "16.2.9",
     "jsdom": "^29.1.1",
     "tailwindcss": "^4",
     "typescript": "^6",