chore(deps): update dependency ember-source to v6

Author: renovate[bot]

packages/test-app/package.json

@@ -61,7 +61,7 @@
     "ember-qunit": "8.1.1",
     "ember-resolver": "13.1.1",
     "ember-sinon": "5.0.0",
-    "ember-source": "5.12.0",
+    "ember-source": "6.5.0",
     "ember-source-channel-url": "3.0.0",
     "ember-try": "3.0.0",
     "eslint": "9.29.0",