Bump eslint-config-next from 14.2.32 to 15.5.4

Bumps [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next) from 14.2.32 to 15.5.4.
- [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/v15.5.4/packages/eslint-config-next)

---
updated-dependencies:
- dependency-name: eslint-config-next
  dependency-version: 15.5.4
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

apps/docs/package.json

@@ -39,7 +39,7 @@
   },
   "devDependencies": {
     "eslint": "^8.57.1",
-    "eslint-config-next": "^14.2.32",
+    "eslint-config-next": "^15.5.4",
     "prettier": "^3.6.2",
     "prettier-plugin-tailwindcss": "^0.6.14",
     "sharp": "0.33.1"