mgr/dashboard: bump @angular/language-service

Bumps [@angular/language-service](https://github.com/angular/angular/tree/HEAD/packages/language-service) from 12.2.16 to 19.1.3.
- [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/19.1.3/packages/language-service)

---
updated-dependencies:
- dependency-name: "@angular/language-service"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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