Bump ember-cli-htmlbars from 5.1.2 to 5.7.1
Bump ember-cli-htmlbars from 5.1.2 to 5.7.1

Bumps [ember-cli-htmlbars](https://github.com/ember-cli/ember-cli-htmlbars) from 5.1.2 to 5.7.1.
- [Release notes](https://github.com/ember-cli/ember-cli-htmlbars/releases)
- [Changelog](https://github.com/ember-cli/ember-cli-htmlbars/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ember-cli/ember-cli-htmlbars/compare/v5.1.2...v5.7.1)

---
updated-dependencies:
- dependency-name: ember-cli-htmlbars
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
freshbooks/ember-responsive,freshbooks/ember-responsive