fix: remove duplicte enable_secure_boot (terraform-google-modules#2040)

Signed-off-by: drfaust92 <ilia.lazebnik@gmail.com>

Author: DrFaust92

autogen/main/cluster.tf.tmpl

@@ -712,7 +712,6 @@ locals {
  "service_account",
  "enable_gcfs",
  "enable_gvnic",
- "enable_secure_boot",
  "boot_disk_kms_key",
  "queued_provisioning",
  "enable_confidential_storage",

modules/beta-private-cluster-update-variant/cluster.tf

@@ -611,7 +611,6 @@ locals {
  "service_account",
  "enable_gcfs",
  "enable_gvnic",
- "enable_secure_boot",
  "boot_disk_kms_key",
  "queued_provisioning",
  "enable_confidential_storage",

modules/beta-public-cluster-update-variant/cluster.tf

@@ -590,7 +590,6 @@ locals {
  "service_account",
  "enable_gcfs",
  "enable_gvnic",
- "enable_secure_boot",
  "boot_disk_kms_key",
  "queued_provisioning",
  "enable_confidential_storage",

modules/private-cluster-update-variant/cluster.tf

@@ -547,7 +547,6 @@ locals {
  "service_account",
  "enable_gcfs",
  "enable_gvnic",
- "enable_secure_boot",
  "boot_disk_kms_key",
  "queued_provisioning",
  "enable_confidential_storage",