Bump @angular-devkit/build-angular from 0.803.18 to 0.803.29

Bumps [@angular-devkit/build-angular](https://github.com/angular/angular-cli) from 0.803.18 to 0.803.29.
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Commits](https://github.com/angular/angular-cli/commits)

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

Author: dependabot-preview[bot]