chore(deps): bump protractor in /packages/stark-testing

Bumps [protractor](https://github.com/angular/protractor) from 5.4.4 to 7.0.0.
- [Release notes](https://github.com/angular/protractor/releases)
- [Changelog](https://github.com/angular/protractor/blob/master/CHANGELOG.md)
- [Commits](angular/protractor@5.4.4...7.0.0)

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