Update domain module version to 0.3.0

Author: briskt

modules/api-gateway-domains-and-certs/modules/certificate-and-domain/main.tf

@@ -5,7 +5,7 @@ locals {
 
 module "domain" {
   source     = "sil-org/api-gateway-custom-domain/aws"
-  version    = "~> 0.2.0"
+  version    = "~> 0.3.0"
   depends_on = [aws_acm_certificate_validation.this]
 
   api_name        = var.api_name