Update changelog

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CHANGELOG.md

@@ -99,6 +99,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Bump `commons-io:commons-io` from 2.7 to 2.11.0
 - Bump `org.apache.shiro:shiro-core` from 1.9.1 to 1.11.0 ([#7397](https://github.com/opensearch-project/OpenSearch/pull/7397))
 - Bump `jetty-server` in hdfs-fixture from 9.4.49.v20220914 to 9.4.51.v20230217 ([#7405](https://github.com/opensearch-project/OpenSearch/pull/7405))
+- Bump `com.networknt:json-schema-validator` from 1.0.78 to 1.0.81 (#7460)
 
 ### Changed
 - Enable `./gradlew build` on MacOS by disabling bcw tests ([#7303](https://github.com/opensearch-project/OpenSearch/pull/7303))
@@ -114,4 +115,4 @@ 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/2.7...2.x
+[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.7...2.x