Fix: Changed the AWS config env variables from object to string (#2259)

* Fix: change env variables from obj to string

This resolves the error faced in staging for the discord command developed by me /grant-aws-access, we were facing this issue when running this in stgaging, this is becuase in the node-config the values were being set as obj with name field as the actual value

* Lint-fix, removed extra line

Author: vikhyat187

config/custom-environment-variables.js

@@ -12,18 +12,10 @@ module.exports = {
   },
 
   aws: {
-    region: {
-      __name: "AWS_REGION",
-    },
-    access_key: {
-      __name: "AWS_ACCESS_KEY",
-    },
-    secret_key: {
-      __name: "AWS_SECRET_KEY",
-    },
-    identity_store_id: {
-      __name: "IDENTITY_STORE_ID",
-    },
+    region: "AWS_REGION",
+    access_key: "AWS_ACCESS_KEY",
+    secret_key: "AWS_SECRET_KEY",
+    identity_store_id: "IDENTITY_STORE_ID",
   },
 
   enableFileLogs: {