Bump ember-cli-template-lint from 1.0.0-beta.2 to 1.0.0-beta.3

Bumps [ember-cli-template-lint](https://github.com/ember-template-lint/ember-cli-template-lint) from 1.0.0-beta.2 to 1.0.0-beta.3.
- [Release notes](https://github.com/ember-template-lint/ember-cli-template-lint/releases)
- [Changelog](https://github.com/ember-template-lint/ember-cli-template-lint/blob/master/CHANGELOG.md)
- [Commits](ember-template-lint/ember-cli-template-lint@v1.0.0-beta.2...v1.0.0-beta.3)