updated versions.tf

Author: rahul-infra

versions.tf

@@ -4,7 +4,11 @@ terraform {
   required_providers {
     aws = {
       source  = "hashicorp/aws"
-      version = "~> 5.0"
+      version = "~> 6.0"
+
+      configuration_aliases = [
+        aws.cross_account_provider
+      ]
     }
   }
 }