Bump eslint from 8.57.1 to 9.14.0 in /test-app

Bumps [eslint](https://github.com/eslint/eslint) from 8.57.1 to 9.14.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v8.57.1...v9.14.0)

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

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

test-app/package.json

@@ -92,7 +92,7 @@
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^6.0.0",
     "ember-try": "^3.0.0",
-    "eslint": "^8.57.0",
+    "eslint": "^9.14.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-ember": "^12.1.1",
     "eslint-plugin-n": "^17.10.1",