Bump ember-cli-mirage from 1.1.7 to 1.1.8
Bump ember-cli-mirage from 1.1.7 to 1.1.8

Bumps [ember-cli-mirage](https://github.com/miragejs/ember-cli-mirage) from 1.1.7 to 1.1.8.
- [Release notes](https://github.com/miragejs/ember-cli-mirage/releases)
- [Changelog](https://github.com/miragejs/ember-cli-mirage/blob/master/CHANGELOG.md)
- [Commits](https://github.com/miragejs/ember-cli-mirage/compare/v1.1.7...v1.1.8)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
ilios/common,ilios/common