deps: bump grunt-bower-task from 0.6.1 to 0.6.2

Bumps [grunt-bower-task](https://github.com/yatskevich/grunt-bower-task) from 0.6.1 to 0.6.2.
- [Release notes](https://github.com/yatskevich/grunt-bower-task/releases)
- [Changelog](https://github.com/yatskevich/grunt-bower-task/blob/devel/HISTORY.md)
- [Commits](https://github.com/yatskevich/grunt-bower-task/commits)

---
updated-dependencies:
- dependency-name: grunt-bower-task
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>