Update dependency ember-cli to v3.28.1

Author: renovate-bot

package.json

@@ -87,7 +87,7 @@
 		"@ember/optional-features": "2.0.0",
 		"babel-eslint": "10.1.0",
 		"broccoli-asset-rev": "3.0.0",
-		"ember-cli": "3.28.0",
+		"ember-cli": "3.28.1",
 		"ember-cli-dependency-checker": "3.2.0",
 		"ember-cli-github-pages": "0.2.2",
 		"ember-cli-head": "2.0.0",

yarn.lock

@@ -11318,10 +11318,10 @@ ember-cli-version-checker@^5.1.2:
     semver "^7.3.4"
     silent-error "^1.1.1"
 
-ember-cli@3.28.0:
-  version "3.28.0"
-  resolved "https://registry.yarnpkg.com/ember-cli/-/ember-cli-3.28.0.tgz#0a0374c9a1d08386ddf56e8098a38b71dd4453bc"
-  integrity sha512-CrMs5edFQ2ingO2xfT33T4nUEl8SlvBQ7q+XO9L/GFTvFU07slHxYSvGur0cwgQfOiLnkSTnIaVF1oqBnEmfPQ==
+ember-cli@3.28.1:
+  version "3.28.1"
+  resolved "https://registry.yarnpkg.com/ember-cli/-/ember-cli-3.28.1.tgz#ba32fa6844ac3059bfe9fab355c6f8386dc81fed"
+  integrity sha512-1SgI4RWJor4yyQIZJvz1egPTYeNUwO5cm4YFXfozU1e5iKcIHM8M2UrGCf3GSGyaFptIxMaDBD3o7GJBnrAb1g==
   dependencies:
     "@babel/core" "^7.13.8"
     "@babel/plugin-transform-modules-amd" "^7.12.1"