Update changelog

Signed-off-by: dependabot[bot] <support@github.com>

CHANGELOG.md

@@ -10,6 +10,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Bumps `org.apache.httpcomponents.client5:httpclient5` from 5.2.1 to 5.2.3
 - Bumps `org.apache.httpcomponents.core5:httpcore5` from 5.2.3 to 5.2.4
 - Bumps `com.carrotsearch.randomizedtesting:randomizedtesting-runner` from 2.7.1 to 2.8.1
+- Bumps `org.hamcrest:hamcrest` from 2.1 to 2.2
 
 This section is for maintaining a changelog for all breaking changes for the client that cannot be released in the 2.x line. All other non-breaking changes should be added to [Unreleased 2.x] section.
 
@@ -256,4 +257,4 @@ This section is for maintaining a changelog for all breaking changes for the cli
 [2.5.0]: https://github.com/opensearch-project/opensearch-java/compare/v2.4.0...v2.5.0
 [2.4.0]: https://github.com/opensearch-project/opensearch-java/compare/v2.3.0...v2.4.0
 [2.3.0]: https://github.com/opensearch-project/opensearch-java/compare/v2.2.0...v2.3.0
-[2.2.0]: https://github.com/opensearch-project/opensearch-java/compare/v2.1.0...v2.2.0
+[2.2.0]: https://github.com/opensearch-project/opensearch-java/compare/v2.1.0...v2.2.0