add new properties

Author: micheleRP

modules/get-started/pages/whats-new.adoc

@@ -72,6 +72,9 @@ The following `rpk` commands are new in this version:
 
 The following cluster properties are new in this version:
 
+* xref:reference:properties/cluster-properties.adoc#debug_bundle_auto_removal_seconds[`debug_bundle_auto_removal_seconds`]
+* xref:reference:properties/cluster-properties.adoc#debug_bundle_storage_dir[`debug_bundle_storage_dir`]
 * xref:reference:properties/cluster-properties.adoc#default_leaders_preference[`default_leaders_preference`]
+* xref:reference:properties/cluster-properties.adoc#iceberg_enabled[`iceberg_enabled`]
 * xref:reference:properties/cluster-properties.adoc#rpk_path[`rpk_path`]
 * xref:reference:properties/cluster-properties.adoc#tombstone_retention_ms[`tombstone_retention_ms`]