Bump @angular/common from 19.1.2 to 19.2.16 in /frontend/oas-angular-app (#47)

Bumps [@angular/common](https://github.com/angular/angular/tree/HEAD/packages/common) from 19.1.2 to 19.2.16.
- [Release notes](https://github.com/angular/angular/releases)
- [Changelog](https://github.com/angular/angular/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular/commits/19.2.16/packages/common)

---
updated-dependencies:
- dependency-name: "@angular/common"
  dependency-version: 19.2.16
  dependency-type: direct:production
...

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