Merge pull request #6 from gridai/random-v3

Upgraded random provider to ~> 3

versions.tf

@@ -1,7 +1,7 @@
 terraform {
   required_providers {
     aws    = "~>3"
-    random = "~>2"
+    random = "~>3"
   }
   required_version = ">= 0.15"
 }