Chore(deps-dev): bump eslint-config-next in /e2e/test-app

Bumps [eslint-config-next](https://github.com/vercel/next.js/tree/HEAD/packages/eslint-config-next) from 15.1.7 to 15.2.0.
- [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/v15.2.0/packages/eslint-config-next)

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

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

Author: dependabot[bot]

e2e/test-app/package-lock.json

@@ -25,7 +25,7 @@
     "@types/node": "22.13.9",
     "@types/react": "19.0.10",
     "eslint": "8.57.1",
-    "eslint-config-next": "15.1.7",
+    "eslint-config-next": "15.2.1",
     "typescript": "5.7.3"
   }
 }