add example

Author: zhuoyang

examples/iam-role-for-service-accounts-eks/main.tf

@@ -137,6 +137,7 @@ module "external_secrets_irsa_role" {
   attach_external_secrets_policy        = true
   external_secrets_ssm_parameter_arns   = ["arn:aws:ssm:*:*:parameter/foo"]
   external_secrets_secrets_manager_arns = ["arn:aws:secretsmanager:*:*:secret:bar"]
+  external_secrets_kms_key_arns         = ["arn:aws:kms:*:*:key/1234abcd-12ab-34cd-56ef-1234567890ab"]
 
   oidc_providers = {
     ex = {