Bump eslint from 8.56.0 to 9.26.0 in /frontend

Bumps [eslint](https://github.com/eslint/eslint) from 8.56.0 to 9.26.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/v9.26.0/CHANGELOG.md)
- [Commits](eslint/eslint@v8.56.0...v9.26.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 9.26.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

frontend/package.json

@@ -97,7 +97,7 @@
     "@types/react-test-renderer": "^17.0.1",
     "@typescript-eslint/eslint-plugin": "^5.44.0",
     "@typescript-eslint/parser": "^5.44.0",
-    "eslint": "^8.28.0",
+    "eslint": "^9.26.0",
     "eslint-config-airbnb-typescript": "^12.3.1",
     "eslint-config-prettier": "^8.1.0",
     "eslint-plugin-import": "^2.22.1",