Bump @angular/compiler-cli from 7.0.0 to 8.2.6 in /angular/ng-docker

Bumps [@angular/compiler-cli](https://github.com/angular/angular) from 7.0.0 to 8.2.6.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](angular/angular@7.0.0...8.2.6)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]