Update dependency ember-source to v3.28.8

Author: renovate-bot

package.json

@@ -101,7 +101,7 @@
     "ember-resolver": "8.0.3",
     "ember-router-scroll": "4.1.2",
     "ember-set-body-class": "1.0.2",
-    "ember-source": "3.28.6",
+    "ember-source": "3.28.8",
     "ember-svg-jar": "2.3.3",
     "ember-template-lint": "3.14.0",
     "ember-test-selectors": "6.0.0",

yarn.lock

@@ -6959,10 +6959,10 @@ ember-source-channel-url@^3.0.0:
   dependencies:
     node-fetch "^2.6.0"
 
-ember-source@3.28.6:
-  version "3.28.6"
-  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.28.6.tgz#ed0f200fa6cb76dffabe3cce73417d7b290d6e98"
-  integrity sha512-CW92R8qa6x6fedJcIl71QvR8vj1c4f0I5LgAKB5eXoFhdDXD+peRtPPuc1i+C+1/ojvaWfDO3RpFcxkiXqvSQA==
+ember-source@3.28.8:
+  version "3.28.8"
+  resolved "https://registry.yarnpkg.com/ember-source/-/ember-source-3.28.8.tgz#c58fd4a1538d6c4b9aebe76c764cabf5396c64d9"
+  integrity sha512-hA15oYzbRdi9983HIemeVzzX2iLcMmSPp6akUiMQhFZYWPrKksbPyLrO6YpZ4hNM8yBjQSDXEkZ1V3yxBRKjUA==
   dependencies:
     "@babel/helper-module-imports" "^7.8.3"
     "@babel/plugin-transform-block-scoping" "^7.8.3"