Updating changelogs for release next week (#19752)

Prepping for release.

Author: richardpark-msft

sdk/messaging/azeventhubs/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 0.3.1 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 0.3.1 (2023-01-10)
 
 ### Bugs Fixed
 
 - User-Agent was incorrectly formatted in our AMQP-based clients. (PR#19712)
 
-### Other Changes
-
 ## 0.3.0 (2022-11-10)
 
 ### Bugs Fixed

sdk/messaging/azservicebus/CHANGELOG.md

@@ -1,17 +1,11 @@
 # Release History
 
-## 1.1.4 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 1.1.4 (2023-01-10)
 
 ### Bugs Fixed
 
 - User-Agent was incorrectly formatted in our AMQP-based clients. (PR#19712)
 
-### Other Changes
-
 ## 1.1.3 (2022-11-16)
 
 ### Bugs Fixed