Updates cloud-native-toolkit/terraform-ibm-access-group module to v3.1.6

Signed-off-by: GitHub <noreply@github.com>

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=v2.3.0"
+  source = "github.com/cloud-native-toolkit/terraform-ibm-access-group.git?ref=v3.1.6"
 
   resourceGroupNames   = split(",", var.resource_group_names)
   createResourceGroups = var.create_resource_groups == "true"

terraform/stages/stage1-access_group.tf

@@ -1,5 +1,5 @@
 module "access_groups" {
-  source = "github.com/cloud-native-toolkit/terraform-ibm-access-group.git?ref=v3.0.0"
+  source = "github.com/cloud-native-toolkit/terraform-ibm-access-group.git?ref=v3.1.6"
 
   resource_group_name = module.resource_group.name
   provision           = var.access_group_provision