feat: resolve tflint warning

main.tf

@@ -25,7 +25,7 @@ resource "google_service_account" "default" {
 resource "google_service_account_key" "default" {
   count = var.service_account_key_enabled && var.module_enabled ? 1 : 0
 
-  service_account_id = join("", google_service_account.default.*.name)
+  service_account_id = join("", [google_service_account.default[*].name])
   key_algorithm      = var.key_algorithm
   public_key_type    = var.public_key_type
   private_key_type   = var.private_key_type
@@ -40,7 +40,7 @@ resource "google_service_account_iam_binding" "admin-account-iam" {
   count = var.google_service_account_iam_binding_enabled && var.module_enabled ? length(var.roles) : 0
 
 
-  service_account_id = join("", google_service_account.default.*.name)
+  service_account_id = join("", [google_service_account.default[*].name])
   role               = var.roles[count.index]
   members            = var.members
 }

outputs.tf

@@ -3,41 +3,41 @@
 # ------------------------------------------------------------------------------
 
 output "email" {
-  value       = join("", google_service_account.default.*.email)
+  value       = join("", [google_service_account.default[*].email])
   description = "The e-mail address of the service account."
 }
 
 output "name" {
-  value       = join("", google_service_account.default.*.name)
+  value       = join("", [google_service_account.default[*].name])
   description = "The fully-qualified name of the service account."
 }
 
 output "unique_id" {
-  value       = join("", google_service_account.default.*.unique_id)
+  value       = join("", [google_service_account.default[*].unique_id])
   description = "The unique id of the service account."
 }
 
 output "id" {
-  value       = join("", google_service_account.default.*.id)
+  value       = join("", [google_service_account.default[*].id])
   description = "The id of the service account."
 }
 
 output "key_id" {
-  value       = join("", google_service_account_key.default.*.id)
+  value       = join("", [google_service_account_key.default[*].id])
   description = "The id of the service account key."
 }
 
 output "key_name" {
-  value       = join("", google_service_account_key.default.*.name)
+  value       = join("", [google_service_account_key.default[*].name])
   description = "The name of the service account key."
 }
 
 output "public_key" {
-  value       = join("", google_service_account_key.default.*.public_key)
+  value       = join("", [google_service_account_key.default[*].public_key])
   description = "The public key, base64 encoded."
 }
 
 output "private_key" {
-  value       = join("", google_service_account_key.default.*.private_key)
+  value       = join("", [google_service_account_key.default[*].private_key])
   description = "The private key in JSON format, base64 encoded."
 }