updating changelog

Author: yashgulati-sudo

ClouderaSetup/OnCloud/AWS/build/CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.1.0] - 2025-03-26
+
+### Changed
+- Updated the README documentation with the latest screenshot of the output file i.e. .txt
+- Improved the formatting of logging statements.
+
+### Fixed
+- Fixed CDW deployment definition to ensure it correctly includes three subnets from the public and private subnets.
+
 ## [3.0.0] - 2025-02-28
 
 ### Added