fix(package): update dotenv to version 8.2.0

Closes #110

Author: greenkeeper[bot]

package.json

@@ -10,7 +10,7 @@
     "bcryptjs": "^2.4.3",
     "body-parser": "^1.19.0",
     "debug": "^4.1.0",
-    "dotenv": "^6.1.0",
+    "dotenv": "^8.2.0",
     "express": "4.17.1",
     "helmet": "^3.15.0",
     "iconv-lite": "0.5.0",