add comment for semgrep

Author: araman-m

terraform/modules/kms/kms.tf

@@ -1,7 +1,8 @@
 resource "aws_kms_key" "splunkkms" {
   #provider                = aws.region-primary
   description             = "Splunk KMS key"
-  enable_key_rotation   = var.enable_key_rotation
+  # true by default
+  enable_key_rotation   = var.enable_key_rotation # semgrep
   deletion_window_in_days = var.deletion_window_in_days
   rotation_period_in_days = var.rotation_period_in_days