Fix `invalid_ember_dependencies?` to actually return result
Fix `invalid_ember_dependencies?` to actually return result

This [commit] changed return value of `run` command to be
`process.value` instead of `status`, so we need to use
`success?` now.

[commit]: https://github.com/thoughtbot/ember-cli-rails/commit/ba83120219a618ac55a668c6462db52c01d140dc

koryteg/glimmer-rails,koryteg/glimmer-rails,rwz/ember-cli-rails,seanpdoyle/ember-cli-rails,rwz/ember-cli-rails,seanpdoyle/ember-cli-rails,weggesser/ember-cli-rails,weggesser/ember-cli-rails,rwz/ember-cli-rails,koryteg/glimmer-rails,thoughtbot/ember-cli-rails,thoughtbot/ember-cli-rails,thoughtbot/ember-cli-rails,weggesser/ember-cli-rails,seanpdoyle/ember-cli-rails