Updated CHANGELOG.md

Author: konakonall

CHANGELOG.md

@@ -7,6 +7,19 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+## [v2.12.3](https://github.com/tencentyun/cos-nodejs-sdk-v5/compare/v2.12.2...v2.12.3) - 2023-07-27
+
+fix
+-  修复分块复制headers可能不正确问题
+
+### Merged
+
+- Dev/2.12.3 [`#180`](https://github.com/tencentyun/cos-nodejs-sdk-v5/pull/180)
+
+### Commits
+
+- Updated CHANGELOG.md [`0eb98f1`](https://github.com/tencentyun/cos-nodejs-sdk-v5/commit/0eb98f15ba7ce2c038751e62990b8ac50d213eb9)
+
 ## [v2.12.2](https://github.com/tencentyun/cos-nodejs-sdk-v5/compare/v2.12.1...v2.12.2) - 2023-07-26
 
 fix