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

Author: renovate[bot]

packages/test-app/package.json

@@ -61,7 +61,7 @@
     "ember-qunit": "9.1.0",
     "ember-resolver": "13.1.1",
     "ember-sinon": "5.0.0",
-    "ember-source": "6.8.1",
+    "ember-source": "7.1.0",
     "ember-source-channel-url": "3.0.0",
     "ember-try": "4.0.0",
     "eslint": "9.39.4",