fix: Use provided k8s service account name when setting up workload identity (terraform-google-modules#972)

Author: sig-abyreddy

modules/workload-identity/main.tf

@@ -48,7 +48,7 @@ resource "kubernetes_service_account" "main" {
 
   automount_service_account_token = var.automount_service_account_token
   metadata {
-    name      = var.name
+    name      = local.k8s_given_name
     namespace = var.namespace
     annotations = {
       "iam.gke.io/gcp-service-account" = local.gcp_sa_email