update queue.max_bytes field in logstash pipeline settings spec (#3925)

Co-authored-by: Wenkai Li <wenkai.li@ing.com>
Co-authored-by: Laura Trotta <153528055+l-trotta@users.noreply.github.com>

Author: 3 people

output/openapi/elasticsearch-openapi.json

@@ -47,11 +47,7 @@ export class PipelineSettings {
   /**
    * The total capacity of the queue (`queue.type: persisted`) in number of bytes.
    */
-  'queue.max_bytes.number': integer
-  /**
-   * The total capacity of the queue (`queue.type: persisted`) in terms of units of bytes.
-   */
-  'queue.max_bytes.units': string
+  'queue.max_bytes': string
   /**
    * The maximum number of written events before forcing a checkpoint when persistent queues are enabled (`queue.type: persisted`).
    */