Bump ember-load-initializers from 2.1.1 to 2.1.2 in /smoke-test-app

Bumps [ember-load-initializers](https://github.com/ember-cli/ember-load-initializers) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/ember-cli/ember-load-initializers/releases)
- [Changelog](https://github.com/ember-cli/ember-load-initializers/blob/master/CHANGELOG.md)
- [Commits](ember-cli/ember-load-initializers@v2.1.1...v2.1.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]