Update changelog for athena

Author: mullermp

gems/aws-sdk-athena/CHANGELOG.md

@@ -4,7 +4,7 @@ Unreleased Changes
 1.96.0 (2024-10-18)
 ------------------
 
-* Feature - Removing FEDERATED from Create/List/Delete/GetDataCatalog API
+* Feature - Remove DataCatalog from Create/DeleteDataCatalog. Remove Status, ConnectionType, and Error from DataCatalog and DataCatalogSummary. These were released inadvertently with no functionality. They were not populated or populated with a default value. Code related to these changes can be safely removed.
 
 1.95.0 (2024-09-24)
 ------------------