chore(deps): update dependency ember-source to v7

Author: renovate[bot]

packages/test-app/package.json

@@ -83,7 +83,7 @@
     "ember-page-title": "8.2.3",
     "ember-qunit": "8.1.1",
     "ember-resolver": "11.0.1",
-    "ember-source": "6.0.1",
+    "ember-source": "7.0.0",
     "ember-source-channel-url": "3.0.0",
     "ember-template-lint": "6.0.0",
     "ember-try": "3.0.0",