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/gmright2-coller/project/5e234943-ebe9-4f7f-b3f8-8ebb53122099?utm_source=github&utm_medium=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -34,7 +34,7 @@
     "cross-env": "^7.0.2",
     "css-loader": "^5.2.4",
     "csurf": "^1.11.0",
-    "dotenv": "^8.2.0",
+    "dotenv": "^8.6.0",
     "express": "^4.17.1",
     "express-rate-limit": "^5.2.6",
     "flat": "^5.0.2",