Update dependency ember-source to v4.12.4

Author: renovate[bot]

package.json

@@ -59,7 +59,7 @@
     "ember-page-title": "7.0.0",
     "ember-qunit": "5.1.5",
     "ember-resolver": "8.0.3",
-    "ember-source": "4.7.1",
+    "ember-source": "4.12.4",
     "ember-source-channel-url": "3.0.0",
     "ember-template-lint": "4.14.0",
     "ember-try": "2.0.0",