fix: upgrade dotenv from 8.2.0 to 8.6.0

Snyk has created this PR to upgrade dotenv from 8.2.0 to 8.6.0.

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

See this project in Snyk:
https://app.snyk.io/org/steelarc/project/0742dd07-f603-44c5-a7d8-7f9bd2f67b54?utm_source=github-enterprise&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -53,7 +53,7 @@
     "@oclif/command": "1.8.0",
     "@oclif/config": "1.17.0",
     "amf-client-js": "4.7.0",
-    "dotenv": "8.2.0",
+    "dotenv": "8.6.0",
     "fs-extra": "8.1.0",
     "handlebars": "4.7.7",
     "js-yaml": "3.14.1",