chore(package): update @types/inquirer to version 6.5.0

Closes #12

Author: greenkeeper[bot]

package.json

@@ -30,7 +30,7 @@
     "devDependencies": {
         "@types/bluebird": "~3.5.24",
         "@types/commander": "~2.12.2",
-        "@types/inquirer": "~0.0.43",
+        "@types/inquirer": "~6.5.0",
         "@types/jsonfile": "~4.0.1",
         "@types/node": "^10.12.2",
         "@types/webpack-merge": "~4.1.3",