fix(package): update inquirer to version 6.3.1

Closes #53

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
     "commander": "^2.12.1",
     "fuzzy": "^0.1.3",
     "github": "^13.1.0",
-    "inquirer": "^5.0.0",
+    "inquirer": "^6.3.1",
     "inquirer-autocomplete-prompt": "^0.12.0",
     "keytar": "^4.0.5",
     "moment-timezone": "^0.5.14",