CHANGELOG.md in aws-sdk-cloud9-1.56.0 vs CHANGELOG.md in aws-sdk-cloud9-1.57.0

@@ -1,7 +1,12 @@
 Unreleased Changes
 ------------------
 
+1.57.0 (2023-09-05)
+------------------
+
+* Feature - Added support for Ubuntu 22.04 that was not picked up in a previous Trebuchet request. Doc-only update.
+
 1.56.0 (2023-08-21)
 ------------------
 
 * Feature - Doc only update to add Ubuntu 22.04 as an Image ID option for Cloud9