Bumps bastion to a t3a.xlarge

prod/aws-us-gov/mdr-prod-c2/account.hcl

@@ -174,7 +174,7 @@ locals {
   }
 
   # Bastion
-  bastion_instance_type = "t3a.micro"
+  bastion_instance_type = "t3a.xlarge"
 
   # GitHub
   github_instance_count = 1