chore(package): update ember-cli-update to version 0.54.5

Closes #47

Author: greenkeeper[bot]

package.json

@@ -47,7 +47,7 @@
     "ember-cli-shims": "^1.2.0",
     "ember-cli-sri": "^2.1.0",
     "ember-cli-uglify": "^2.0.0",
-    "ember-cli-update": "^0.34.7",
+    "ember-cli-update": "^0.54.5",
     "ember-data": "^3.10.0",
     "ember-disable-prototype-extensions": "^1.1.2",
     "ember-export-application-global": "^2.0.0",