build(deps-dev): bump eslint from 6.4.0 to 7.3.1 (#613)

Bumps [eslint](https://github.com/eslint/eslint) from 6.4.0 to 7.3.1.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v6.4.0...v7.3.1)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>