chore(package): update semantic-release to version 6.3.2

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -47,7 +47,7 @@
     "loopback-datasource-juggler": "^2.50.0",
     "mocha": "^3.0.2",
     "rsvp": "3.3.1",
-    "semantic-release": "^4.3.5",
+    "semantic-release": "^6.3.2",
     "standard": "^8.1.0",
     "supertest": "^2.0.0",
     "xyz": "^1.0.0"