Updated CTS changelog (Azure#49152)

* fixed changelog

Author: vimauro

sdk/confidentialledger/Azure.Security.CodeTransparency/CHANGELOG.md

@@ -1,30 +1,13 @@
 # Release History
 
-## 1.0.0-beta.4 (2025-03-27)
+## 1.0.0-beta.3 (2025-03-31)
 
 ### Features Added
 
 - Aligned with the latest changes (Feb 25) of the IETF draft: https://datatracker.ietf.org/doc/draft-ietf-scitt-architecture/
 - Updated receipt verification logic.
-
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
-## 1.0.0-beta.3 (Unreleased)
-
-### Features Added
-
 - Exposed `JsonModelWriteCore` for model serialization procedure.
 
-### Breaking Changes
-
-### Bugs Fixed
-
-### Other Changes
-
 ## 1.0.0-beta.2 (2024-03-27)
 
 ### Bugs Fixed