Add deprecation notice for max_size rollover condition (#5399)

Author: lukewhiting

specification/ilm/_types/Phase.ts

@@ -97,6 +97,9 @@ export class SetPriorityAction {
 }
 
 export class RolloverAction {
+  /**
+   * The `max_size` condition has been deprecated in 9.3.0 and `max_primary_shard_size` should be used instead
+   * @deprecated 9.3.0 */
   max_size?: ByteSize
   max_primary_shard_size?: ByteSize
   max_age?: Duration

specification/indices/rollover/types.ts

@@ -27,6 +27,9 @@ export class RolloverConditions {
   max_age_millis?: DurationValue<UnitMillis>
   min_docs?: long
   max_docs?: long
+  /**
+   * The `max_size` condition has been deprecated in 9.3.0 and `max_primary_shard_size` should be used instead
+   * @deprecated 9.3.0 */
   max_size?: ByteSize
   max_size_bytes?: long
   min_size?: ByteSize