Merge pull request #264 from ember-cli/deprecation-workflow

update ember-cli-deprecation-workflow to v4

Author: NullVoxPopuli

files/package.json

@@ -66,7 +66,7 @@
     "decorator-transforms": "^2.3.1",
     "ember-cli": "~6.12.0",
     "ember-cli-babel": "^8.3.1",
-    "ember-cli-deprecation-workflow": "^3.4.0",
+    "ember-cli-deprecation-workflow": "^4.0.1",
     "ember-load-initializers": "^3.0.1",
     "ember-modifier": "^4.3.0",
     "ember-page-title": "^9.0.3",