chore(deps): update terraform cloudposse/ecs-cloudwatch-sns-alarms/aws to v0.12.3

Author: renovate[bot]

main.tf

@@ -254,7 +254,7 @@ locals {
 
 module "ecs_cloudwatch_sns_alarms" {
   source  = "cloudposse/ecs-cloudwatch-sns-alarms/aws"
-  version = "0.12.1"
+  version = "0.12.3"
   enabled = var.ecs_alarms_enabled
 
   cluster_name = var.ecs_cluster_name