Bump eslint from 6.8.0 to 8.57.0 in /webui/frontend

Bumps [eslint](https://github.com/eslint/eslint) from 6.8.0 to 8.57.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v6.8.0...v8.57.0)

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

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

webui/frontend/package.json

@@ -30,7 +30,7 @@
     "@vue/eslint-config-typescript": "^12.0.0",
     "babel-eslint": "^10.1.0",
     "bootstrap": "^4.6.0",
-    "eslint": "^6.8.0",
+    "eslint": "^8.57.0",
     "eslint-plugin-vue": "^7.20.0",
     "mutationobserver-shim": "^0.3.7",
     "popper.js": "^1.16.1",