chore(deps-dev): bump ember-cli-mirage from 3.0.3 to 3.0.4

Bumps [ember-cli-mirage](https://github.com/miragejs/ember-cli-mirage) from 3.0.3 to 3.0.4.
- [Release notes](https://github.com/miragejs/ember-cli-mirage/releases)
- [Changelog](https://github.com/miragejs/ember-cli-mirage/blob/master/CHANGELOG.md)
- [Commits](miragejs/ember-cli-mirage@v3.0.3...v3.0.4)

---
updated-dependencies:
- dependency-name: ember-cli-mirage
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -84,7 +84,7 @@
     "ember-cli-clean-css": "3.0.0",
     "ember-cli-dependency-checker": "3.3.2",
     "ember-cli-inject-live-reload": "2.1.0",
-    "ember-cli-mirage": "3.0.3",
+    "ember-cli-mirage": "3.0.4",
     "ember-cli-sass": "11.0.1",
     "ember-cli-sri": "2.1.1",
     "ember-cli-terser": "4.0.2",