chore(deps): update karma-sauce-launcher

Because it contains:
https://github.com/karma-runner/karma-sauce-launcher/commit/4aef4e98f4b9ea955c1115483976ebdb89530a01
https://github.com/karma-runner/karma-sauce-launcher/commit/8b626f5575fb5575c340da67d0fab66c9f5af1b9

Which should handle:
https://travis-ci.org/angular/angular.js/jobs/24101767
https://travis-ci.org/angular/angular.js/jobs/24018360