build: update @schematics/angular requirement to 0.6.7 in /packages/@ionic/schematics-angular (#3260)
build: update @schematics/angular requirement to 0.6.7 in /packages/@ionic/schematics-angular (#3260)

Updates the requirements on [@schematics/angular](https://github.com/angular/devkit) to permit the latest version.
- [Release notes](https://github.com/angular/devkit/releases)
- [Commits](https://github.com/angular/devkit/commits)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
driftyco/ionic-cli,driftyco/ionic-cli,driftyco/ionic-cli