Update CHANGELOG.md (Azure#49228)

Author: adyabansal-ms

sdk/purview/Azure.Analytics.Purview.DataMap/CHANGELOG.md

@@ -1,16 +1,14 @@
 # Release History
 
-## 1.0.0-beta.2 (Unreleased)
+## 1.0.0-beta.2 (2025-04-08)
 
 ### Features Added
 
 - Exposed `JsonModelWriteCore` for model serialization procedure.
 
-### Breaking Changes
-
 ### Bugs Fixed
 
-### Other Changes
+- Updated type of endorsements from string to list[string] in SuggestResultValue and SuggestResultValue models.
 
 ## 1.0.0-beta.1 (2024-03-12)