adding freeze (#2765) (#2766)

(cherry picked from commit 1a9a93e)

Co-authored-by: Laura Trotta <[email protected]>

Author: github-actions[bot]

output/openapi/elasticsearch-openapi.json

@@ -52,6 +52,11 @@ export class Actions {
    * Phases allowed: hot, warm, cold.
    */
   downsample?: DownsampleAction
+
+  /**
+   * The freeze action is a noop in 8.x
+   * @deprecated 7.0.0 */
+  freeze?: EmptyObject
   /**
    * Phases allowed: hot, warm.
    */