Update RELEASE.CHANGELOG.md for Amazon.Lambda.Annotations version 1.5.2

Author: normj

RELEASE.CHANGELOG.md

@@ -1,3 +1,7 @@
+### Release 2024-09-29
+* **Amazon.Lambda.Annotations (1.5.2)**
+  * Fixed issue with handling unicode characters when converting FromBody parameters from JSON to .NET type.
+
 ### Release 2024-09-25
 * **Amazon.Lambda.Annotations (1.5.1)**
   * Added a 127 character limit on the Lambda function handler when the package type is set to zip.