build(deps-dev): bump eslint-plugin-n in /frontend

Bumps [eslint-plugin-n](https://github.com/eslint-community/eslint-plugin-n) from 16.6.2 to 17.21.0.
- [Release notes](https://github.com/eslint-community/eslint-plugin-n/releases)
- [Changelog](https://github.com/eslint-community/eslint-plugin-n/blob/master/CHANGELOG.md)
- [Commits](eslint-community/eslint-plugin-n@16.6.2...v17.21.0)

---
updated-dependencies:
- dependency-name: eslint-plugin-n
  dependency-version: 17.21.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]