Updates cloud-native-toolkit/terraform-ibm-access-group module to v2.3.0 (#344)

Author: cloudnativetoolkit

terraform/stages-access-group/stage-access-group.tf

@@ -1,5 +1,5 @@
 module "access_group" {
-  source = "github.com/cloud-native-toolkit/terraform-ibm-access-group.git?ref=v2.2.0"
+  source = "github.com/cloud-native-toolkit/terraform-ibm-access-group.git?ref=v2.3.0"
 
   resourceGroupNames   = split(",", var.resource_group_names)
   createResourceGroups = var.create_resource_groups == "true"