Bumps [@angular/http](https://github.com/angular/angular) from 7.2.15 to 7.2.16.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/7.2.16/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/compare/7.2.15...7.2.16)
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