Update changelog

Signed-off-by: dependabot[bot] <[email protected]>

CHANGELOG.md

@@ -106,6 +106,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `netty` from 4.1.94.Final to 4.1.96.Final ([#9030](https://github.com/opensearch-project/OpenSearch/pull/9030))
 - Bump `io.projectreactor.netty:reactor-netty-http` from 1.1.8 to 1.1.9 ([#9147](https://github.com/opensearch-project/OpenSearch/pull/9147))
 - Bump `org.apache.maven:maven-model` from 3.9.3 to 3.9.4 ([#9148](https://github.com/opensearch-project/OpenSearch/pull/9148))
+- Bump `com.diffplug.spotless` from 6.19.0 to 6.20.0 ([#9227](https://github.com/opensearch-project/OpenSearch/pull/9227))
 
 ### Changed
 - Perform aggregation postCollection in ContextIndexSearcher after searching leaves ([#8303](https://github.com/opensearch-project/OpenSearch/pull/8303))
@@ -130,4 +131,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Security
 
 [Unreleased 3.0]: https://github.com/opensearch-project/OpenSearch/compare/2.x...HEAD
-[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.10...2.x
+[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.10...2.x