fix(Pubspec): Update `source_gen` to ^0.7.0 in `angular_compiler`.
fix(Pubspec): Update `source_gen` to ^0.7.0 in `angular_compiler`.

PiperOrigin-RevId: 163484182

angulardart/angular,kevmoo/angular,matanlurey/angular,chalin/angular2,angulardart/angular,matanlurey/angular,chalin/angular2,matanlurey/angular,kevmoo/angular,angulardart/angular,chalin/angular2,kevmoo/angular