chore(deps-dev): bump ng-packagr from 13.1.1 to 13.1.2

Bumps [ng-packagr](https://github.com/ng-packagr/ng-packagr) from 13.1.1 to 13.1.2.
- [Release notes](https://github.com/ng-packagr/ng-packagr/releases)
- [Changelog](https://github.com/ng-packagr/ng-packagr/blob/master/CHANGELOG.md)
- [Commits](ng-packagr/ng-packagr@v13.1.1...v13.1.2)

---
updated-dependencies:
- dependency-name: ng-packagr
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>