Bump grunt-eslint from 24.0.0 to 24.3.0

Bumps [grunt-eslint](https://github.com/sindresorhus/grunt-eslint) from 24.0.0 to 24.3.0.
- [Release notes](https://github.com/sindresorhus/grunt-eslint/releases)
- [Commits](sindresorhus/grunt-eslint@v24.0.0...v24.3.0)

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

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