Bump @angular/compiler from 9.0.3 to 9.0.4 (#7691)
Bumps [@angular/compiler](https://github.com/angular/angular/tree/HEAD/packages/compiler) from 9.0.3 to 9.0.4.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/master/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/9.0.4/packages/compiler)
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