⬆️ Bump ember-cli from 4.8.0 to 4.12.2

Bumps [ember-cli](https://github.com/ember-cli/ember-cli) from 4.8.0 to 4.12.2.
- [Release notes](https://github.com/ember-cli/ember-cli/releases)
- [Changelog](https://github.com/ember-cli/ember-cli/blob/v4.12.2/CHANGELOG.md)
- [Commits](ember-cli/ember-cli@v4.8.0...v4.12.2)

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

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

package.json

@@ -50,7 +50,7 @@
     "babel-eslint": "^10.1.0",
     "broccoli-asset-rev": "^3.0.0",
     "ember-auto-import": "^2.0.2",
-    "ember-cli": "~4.8.0",
+    "ember-cli": "~4.12.2",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-htmlbars": "^6.0.0",
     "ember-cli-inject-live-reload": "^2.0.2",