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

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -39,7 +39,7 @@
     "ava": "^0.16.0",
     "greenkeeper-postpublish": "^1.0.1",
     "rimraf": "^2.5.4",
-    "semantic-release": "^4.3.5",
+    "semantic-release": "^6.3.2",
     "ts-node": "^1.6.1",
     "tslint": "^3.15.1",
     "tslint-config-standard": "^1.5.0",