Update dependency ember-cli-babel to v8.3.1

Author: renovate[bot]

ghost/admin/lib/ember-power-calendar-utils/package.json

@@ -8,7 +8,7 @@
     "ember-addon"
   ],
   "dependencies": {
-    "ember-cli-babel": "8.2.0",
+    "ember-cli-babel": "8.3.1",
     "moment-timezone": "0.5.45"
   }
 }