feat: upgrade commander from 5.0.0 to 6.2.0 (#1622)

Snyk has created this PR to upgrade commander from 5.0.0 to 6.2.0.

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

See this project in Snyk:
https://app.snyk.io/org/acinader/project/953c8e1a-a9ef-4134-afbe-43474913abbb?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -39,7 +39,7 @@
     "bcryptjs": "2.3.0",
     "body-parser": "1.19.0",
     "codemirror-graphql": "github:timsuchanek/codemirror-graphql#details-fix",
-    "commander": "5.0.0",
+    "commander": "6.2.0",
     "connect-flash": "0.1.1",
     "cookie-session": "2.0.0-beta.3",
     "copy-to-clipboard": "^3.2.0",