fix: ConflictException: A resource with this name already exists

Error occurs when trying to upgrade kafka_version.

main.tf

@@ -250,6 +250,10 @@ data "aws_iam_policy_document" "this" {
 resource "random_id" "this" {
   count = var.create && var.create_configuration ? 1 : 0
 
+  keepers = {
+    kafka_version = var.kafka_version
+  }
+
   byte_length = 8
 }
 
@@ -258,7 +262,7 @@ resource "aws_msk_configuration" "this" {
 
   name              = format("%s-%s", coalesce(var.configuration_name, var.name), random_id.this[0].dec)
   description       = var.configuration_description
-  kafka_versions    = [var.kafka_version]
+  kafka_versions    = [random_id.this[0].keepers.kafka_version]
   server_properties = join("\n", [for k, v in var.configuration_server_properties : format("%s = %s", k, v)])
 
   lifecycle {