Mark enrich.stats and indices.delete_data_lifecycle as private in Serverless

These have INTERNAL scope now.

enrich.stats was updated here:
elastic/elasticsearch#107022

indices.delete_data_lifecycle was updated here:
elastic/elasticsearch#107607

Author: picandocodigo

specification/enrich/stats/EnrichStatsRequest.ts

@@ -24,6 +24,6 @@ import { RequestBase } from '@_types/Base'
  * Returns enrich coordinator statistics and information about enrich policies that are currently executing.
  * @rest_spec_name enrich.stats
  * @availability stack since=7.5.0 stability=stable
- * @availability serverless stability=stable visibility=public
+ * @availability serverless stability=stable visibility=private
  */
 export interface Request extends RequestBase {}

specification/indices/delete_data_lifecycle/IndicesDeleteDataLifecycleRequest.ts

@@ -26,7 +26,7 @@ import { Duration } from '@_types/Time'
  * Removes the data stream lifecycle from a data stream, rendering it not managed by the data stream lifecycle.
  * @rest_spec_name indices.delete_data_lifecycle
  * @availability stack since=8.11.0 stability=stable
- * @availability serverless stability=stable visibility=public
+ * @availability serverless stability=stable visibility=private
  */
 export interface Request extends RequestBase {
   path_parts: {