Merge pull request #823 from adopted-ember-addons/dependabot/npm_and_yarn/ember-source-5.6.0

Author: dependabot[bot]

package.json

@@ -73,7 +73,7 @@
     "ember-page-title": "^8.0.0",
     "ember-qunit": "^8.0.1",
     "ember-resolver": "^11.0.1",
-    "ember-source": "~5.4.0",
+    "ember-source": "~5.6.0",
     "ember-source-channel-url": "^3.0.0",
     "ember-template-lint": "^5.11.2",
     "ember-try": "^3.0.0",