fix: upgrade chalk from 2.4.1 to 2.4.2

Snyk has created this PR to upgrade chalk from 2.4.1 to 2.4.2.

See this package in npm:
https://www.npmjs.com/package/chalk

See this project in Snyk:
https://app.snyk.io/org/hex22a/project/81ca3c6f-537d-45f9-9582-1f27b6019489?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -20,7 +20,7 @@
     "test": "mocha test"
   },
   "dependencies": {
-    "chalk": "^2.1.0",
+    "chalk": "^2.4.2",
     "inquirer": "^3.3.0",
     "octonode": "^0.9.1"
   },