chore: update change log (#3816)

Author: josephwoodward

CHANGELOG.md

@@ -9,7 +9,12 @@ All notable changes to this project will be documented in this file.
 
 - Added Redpanda Cloud service account authentication to all redpanda/kafka based components (@rockwotj)
 - `mysql_cdc`: Support for chained or unchained IAM authentication (@josephwoodward)
-- `postgresql_cdc`: Support for chained or unchained IAM authentication (@josephwoodward)
+- `postgresql_cdc`: Support for chained IAM authentication (@josephwoodward)
+- `redpanda_migrator`: Add client timeout config for schema registry client (@josephwoodward)
+
+### Fixed
+
+- `schema_registry_decode`: Fix serde protobuf race condition in processor (@rockwotj)
 
 ## 4.71.0 - 2025-11-21