chore(deps-dev): bump @angular-eslint/schematics

Bumps [@angular-eslint/schematics](https://github.com/angular-eslint/angular-eslint/tree/HEAD/packages/schematics) from 18.3.1 to 21.3.0.
- [Release notes](https://github.com/angular-eslint/angular-eslint/releases)
- [Changelog](https://github.com/angular-eslint/angular-eslint/blob/main/packages/schematics/CHANGELOG.md)
- [Commits](https://github.com/angular-eslint/angular-eslint/commits/v21.3.0/packages/schematics)

---
updated-dependencies:
- dependency-name: "@angular-eslint/schematics"
  dependency-version: 21.3.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]