update the change logs

changelog.md

@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+- [Add support for xsi:nil Attribute in xml to json/record conversion](https://github.com/ballerina-platform/ballerina-library/issues/7462)
+
+## [2.6.2] - 2023-08-17
+
 ### Fixed
 [Fix the mismatch error by `fromXml` API while the field has the name annotation](https://github.com/ballerina-platform/ballerina-standard-library/issues/3802)
 [Make some of the Java classes proper utility classes](https://github.com/ballerina-platform/ballerina-standard-library/issues/4902)