Updated CHANGELOG.md

Author: konakonall

CHANGELOG.md

@@ -7,6 +7,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+## [v5.5.4](https://github.com/tencentyun/cos-cpp-sdk-v5/compare/v5.5.2...v5.5.4) - 2022-04-14
+
+1.完善aysnc api
+2.完善async api UT测试
+3.增加稳定性测试工具
+
+### Merged
+
+- Dev/async api [`#103`](https://github.com/tencentyun/cos-cpp-sdk-v5/pull/103)
+
+### Commits
+
+- 1.optimize async api  2.add stable test tool [`19a52ae`](https://github.com/tencentyun/cos-cpp-sdk-v5/commit/19a52ae311f5fd3ab0bca2f713e655ec64f1da77)
+- optimize async api [`8ced1ae`](https://github.com/tencentyun/cos-cpp-sdk-v5/commit/8ced1ae32ab286ac69adcfe35934fa20d44b3508)
+- Updated CHANGELOG.md [`1106925`](https://github.com/tencentyun/cos-cpp-sdk-v5/commit/1106925ecbc401c3c9099c0a748c3ea97f510acd)
+
 ## [v5.5.2](https://github.com/tencentyun/cos-cpp-sdk-v5/compare/v5.5.1...v5.5.2) - 2022-02-15
 
 optimize async api