Update dependency ember-cli to v3.28.5 (ember-cli#821)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -60,7 +60,7 @@
     "auto-dist-tag": "2.1.1",
     "babel-eslint": "10.1.0",
     "codeclimate-test-reporter": "0.5.1",
-    "ember-cli": "3.28.4",
+    "ember-cli": "3.28.5",
     "ember-cli-addon-docs": "4.2.1",
     "ember-cli-addon-docs-yuidoc": "1.0.0",
     "ember-cli-dependency-checker": "3.2.0",

yarn.lock

@@ -6943,10 +6943,10 @@ ember-cli-version-checker@^5.1.0, ember-cli-version-checker@^5.1.1, ember-cli-ve
     semver "^7.3.4"
     silent-error "^1.1.1"
 
-ember-cli@3.28.4:
-  version "3.28.4"
-  resolved "https://registry.yarnpkg.com/ember-cli/-/ember-cli-3.28.4.tgz#784cfeaf5319e409edc3e03e5d99bcfcf18f9e53"
-  integrity sha512-bRQpZqx1YctDNR7gb5CXfXYkZtieMh4F6v6bZtu+Da8jWTKoGizG1LXsG/Bhs96USPjlZZsErkSBo6qiGjJlcA==
+ember-cli@3.28.5:
+  version "3.28.5"
+  resolved "https://registry.yarnpkg.com/ember-cli/-/ember-cli-3.28.5.tgz#9c91266e412f6d537b47a88e4b63a2b56db35483"
+  integrity sha512-Y/UdbUOTeKHGMCP3XtE5g14JUTYyeQTdjPvHuv11FFx5HQBtHqqWLY6U1ivMDukDkQ4i2v6TyaUcKVo4e8PtyQ==
   dependencies:
     "@babel/core" "^7.13.8"
     "@babel/plugin-transform-modules-amd" "^7.12.1"