add changelog

Signed-off-by: Jakob Hahn <jakob.hahn@hetzner.com>

CHANGELOG.md

@@ -11,6 +11,9 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - Added new struct fields introduced by opensearch 2.12 ([#482](https://github.com/opensearch-project/opensearch-go/pull/482))
 - Adds initial admin password environment variable and CI changes to support 2.12.0 release ([#449](https://github.com/opensearch-project/opensearch-go/pull/449))
 ### Changed
+- Updated workflow action versions ([#488](https://github.com/opensearch-project/opensearch-go/pull/488))
+- Changed integration tests to work with secure and unsecure opensearch ([#488](https://github.com/opensearch-project/opensearch-go/pull/488))
+- Moved functions from opensearch/internal/test to internal/test for more general test uses ([#488](https://github.com/opensearch-project/opensearch-go/pull/488))
 ### Deprecated
 ### Removed
 ### Fixed
@@ -145,4 +148,4 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 [2.1.0]: https://github.com/opensearch-project/opensearch-go/compare/v2.0.1...v2.1.0
 [2.0.1]: https://github.com/opensearch-project/opensearch-go/compare/v2.0.0...v2.0.1
 [2.0.0]: https://github.com/opensearch-project/opensearch-go/compare/v1.1.0...v2.0.0
-[1.0.0]: https://github.com/opensearch-project/opensearch-go/compare/v1.0.0...v1.1.0
+[1.0.0]: https://github.com/opensearch-project/opensearch-go/compare/v1.0.0...v1.1.0