[ServiceBus] Prepare for November 2023 release (Azure#27623)

- update CHANGELOG

Author: jeremymeng

sdk/servicebus/service-bus/CHANGELOG.md

@@ -1,13 +1,11 @@
 # Release History
 
-## 7.9.3 (Unreleased)
-
-### Features Added
-
-### Breaking Changes
+## 7.9.3 (2023-11-07)
 
 ### Bugs Fixed
 
+- Throw a retryable error when sending message and link is detached [PR #27557](https://github.com/Azure/azure-sdk-for-js/pull/27557)
+
 ### Other Changes
 
 - Add check to ensure argument to `scheduledEnqueueTimeUtc` of `scheduleMessages()` method is an instance of `Date` [PR #27396](https://github.com/Azure/azure-sdk-for-js/pull/27396)