Prepare Event Hubs for June 2025 release (Azure#2669)

* Updated for June 2025 release

* Update sdk/eventhubs/azure_messaging_eventhubs/CHANGELOG.md

Co-authored-by: Heath Stewart <[email protected]>

* Update sdk/eventhubs/azure_messaging_eventhubs/CHANGELOG.md

Co-authored-by: Copilot <[email protected]>

---------

Co-authored-by: Heath Stewart <[email protected]>
Co-authored-by: Copilot <[email protected]>

Author: 3 people

sdk/eventhubs/azure_messaging_eventhubs/CHANGELOG.md

@@ -1,15 +1,17 @@
 # Release History
 
-## 0.4.0 (Unreleased)
-
-### Features Added
+## 0.4.0 (2025-06-10)
 
 ### Breaking Changes
 
-### Bugs Fixed
+- Event Message Properties is now an `AmqpSimpleValue` rather than an `AmqpValue` to more closely reflect the AMQP specification (AMQP ApplicationProperties cannot contain Map, List, or Array).
 
 ### Other Changes
 
+- Added performance tests for some Event Hubs APIs
+- Use `SafeDebug` attribute for AMQP messages
+- Test infrastructure is now deployed using a `test-resources.bicep` file instead of a `test-resources.json` file.
+- Restructured internal logic to prepare for connection/session recovery.
 
 ## 0.3.0 (2025-05-07)