feat: upgrade to AL2023 (cleanup using coalesce + line fmt)

Author: oycyc

data.tf

@@ -20,4 +20,4 @@ data "aws_ami" "amazon_linux_2023" {
     name   = "virtualization-type"
     values = ["hvm"]
   }
-}
+}

main.tf

@@ -271,7 +271,7 @@ DOC
 
 resource "aws_launch_template" "default" {
   name_prefix   = module.this.id
-  image_id      = length(var.ami) > 0 ? var.ami : data.aws_ami.amazon_linux_2023.id
+  image_id      = coalesce(var.ami, data.aws_ami.amazon_linux_2023.id)
   instance_type = var.instance_type
   key_name      = var.key_pair_name
   user_data     = base64encode(var.user_data)