mgr/dashboard: bump @angular/language-service

Bumps [@angular/language-service](https://github.com/angular/angular/tree/HEAD/packages/language-service) from 13.3.11 to 19.1.8.
- [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/19.1.8/packages/language-service)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]