Prepare for release (#27426)

sdk/servicebus/Azure.Messaging.ServiceBus/CHANGELOG.md

@@ -2,12 +2,25 @@
 
 ## 7.7.0 (2022-02-11)
 
+### Acknowledgments
+Thank you to our developer community members who helped to make the Service Bus client library better with their contributions to this release:
+
+- Daniel Marbach  _([GitHub](https://github.com/danielmarbach))_
+
+### Features Added
+
+- Add the ability to manually renew message and session locks when using the processor.
+
 ### Bugs Fixed
 
 - Fixed name of ServiceBusAdministrationClient extension method.
+- Fixed entity name validation when passing in a subscription entity path into the 
+  CreateReceiver method.
 
 ### Other Changes
 
+- Removed LINQ allocations when sending messages. _(A community contribution, courtesy of [danielmarbach](https://github.com/danielmarbach))_
+
 ## 7.6.0 (2022-02-08)
 
 ### Acknowledgments