fix: Amend ecs_target network_configuration to work when no ecs_target supplied (terraform-aws-modules#25)

Author: JoelClemence

main.tf

@@ -82,8 +82,8 @@ resource "aws_cloudwatch_event_target" "this" {
       task_definition_arn = lookup(ecs_target.value, "task_definition_arn", null)
 
       dynamic "network_configuration" {
-        for_each = lookup(each.value.ecs_target, "network_configuration", null) != null ? [
-          each.value.ecs_target.network_configuration
+        for_each = lookup(ecs_target.value, "network_configuration", null) != null ? [
+          ecs_target.value.network_configuration
         ] : []
 
         content {