build: bump @eslint/js from 9.21.0 to 9.23.0 in /frontend

Bumps [@eslint/js](https://github.com/eslint/eslint/tree/HEAD/packages/js) from 9.21.0 to 9.23.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint/commits/v9.23.0/packages/js)

---
updated-dependencies:
- dependency-name: "@eslint/js"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -40,7 +40,7 @@
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3.2.0",
-    "@eslint/js": "^9.1.1",
+    "@eslint/js": "^9.23.0",
     "@testing-library/jest-dom": "^6.5.0",
     "@testing-library/react": "^16.0.1",
     "@testing-library/user-event": "^14.5.2",