chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeperio-bot

yarn.lock

@@ -8,9 +8,9 @@
   dependencies:
     inversify "^4.3.0"
 
-"@robotlegsjs/signals@^0.0.11":
-  version "0.0.11"
-  resolved "https://registry.npmjs.org/@robotlegsjs/signals/-/signals-0.0.11.tgz#627fdcc549d85badabbaa0b38f884e1ee852c826"
+"@robotlegsjs/[email protected].12":
+  version "0.0.12"
+  resolved "https://registry.npmjs.org/@robotlegsjs/signals/-/signals-0.0.12.tgz#5d7cbbfdba902c289529cce23186985cccb64884"
 
 "@types/bluebird@^3.5.17":
   version "3.5.17"