Bump broccoli-test-helper from 1.1.0 to 1.2.0
Bump broccoli-test-helper from 1.1.0 to 1.2.0

Bumps [broccoli-test-helper](https://github.com/broccolijs/broccoli-test-helper) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/broccolijs/broccoli-test-helper/releases)
- [Commits](https://github.com/broccolijs/broccoli-test-helper/compare/v1.1.0...v1.2.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
rwjblue/ember-cli-template-lint,rwjblue/ember-cli-template-lint