Bump @angular/cli in /angular/directives/app-attach-directive

Bumps [@angular/cli](https://github.com/angular/angular-cli) from 8.3.25 to 9.0.0.
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Commits](angular/angular-cli@v8.3.25...v9.0.0)

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

Author: dependabot-preview[bot]