Bump karma-browserstack-launcher from 1.5.2 to 1.6.0
Bump karma-browserstack-launcher from 1.5.2 to 1.6.0

Bumps [karma-browserstack-launcher](https://github.com/karma-runner/karma-browserstack-launcher) from 1.5.2 to 1.6.0.
- [Release notes](https://github.com/karma-runner/karma-browserstack-launcher/releases)
- [Changelog](https://github.com/karma-runner/karma-browserstack-launcher/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma-browserstack-launcher/commits/v1.6.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
Robdel12/DropKick,Robdel12/DropKick