An in-range update of ember-cli-version-checker is breaking the build 🚨

## The dependency [ember-cli-version-checker](https://github.com/rwjblue/ember-cli-version-checker) was updated from `3.1.2` to `3.1.3`.

🚨 [View failing branch](https://github.com/ember-fastboot/ember-cli-fastboot/compare/master...ember-fastboot:greenkeeper%2Fember-cli-version-checker-3.1.3).

This version is **covered** by your **current version range** and after updating it in your project **the build failed**.

ember-cli-version-checker is a direct dependency of this project, and **it is very likely causing it to break**. If other packages depend on yours, this update is probably also breaking those in turn.

Status Details

- ❌ **continuous-integration/appveyor/branch:** Waiting for AppVeyor build to complete ([Details](https://ci.appveyor.com/project/kratiahuja/ember-cli-fastboot-xih05/builds/23390948)).
- ❌ **continuous-integration/travis-ci/push:** The Travis CI build failed ([Details](https://travis-ci.org/ember-fastboot/ember-cli-fastboot/builds/511914259?utm_source=github_status&utm_medium=notification)).

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