chore(deps): update dependency ember-cli to ~4.12.0

Author: renovate[bot]

package.json

@@ -38,7 +38,7 @@
     "babel-eslint": "^10.1.0",
     "broccoli-asset-rev": "^3.0.0",
     "ember-auto-import": "^2.0.0",
-    "ember-cli": "~4.1.0",
+    "ember-cli": "~4.12.0",
     "ember-cli-dependency-checker": "^3.2.0",
     "ember-cli-inject-live-reload": "^2.1.0",
     "ember-cli-release": "^1.0.0-beta.2",