[azservicebus] Updating changelog for release next week (Azure#19275)

Author: richardpark-msft

sdk/messaging/azservicebus/CHANGELOG.md

@@ -1,10 +1,6 @@
 # Release History
 
-## 1.1.1 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.1.1 (2022-10-11)
 
 ### Bugs Fixed
 
@@ -13,8 +9,6 @@
   been added for `AcceptNextSessionForQueue`. PR#19113.
 - Retries now respect cancellation when they're in the "delay before next try" phase.
 
-### Other Changes
-
 ## 1.1.0 (2022-08-09)
 
 ### Features Added