chore(dependencies): Update karma requirement to ~1.7.1
chore(dependencies): Update karma requirement to ~1.7.1

Updates the requirements on [karma](https://github.com/karma-runner/karma) to permit the latest version.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma/commits/v1.7.1)
tomastrajan/angular-ngrx-material-starter,tomastrajan/angular-ngrx-material-starter,tomastrajan/angular-ngrx-material-starter,tomastrajan/angular-ngrx-material-starter