build(deps): bump org.opensearch.client:opensearch-java

Bumps [org.opensearch.client:opensearch-java](https://github.com/opensearch-project/opensearch-java) from 2.15.0 to 2.16.0.
- [Release notes](https://github.com/opensearch-project/opensearch-java/releases)
- [Changelog](https://github.com/opensearch-project/opensearch-java/blob/v2.16.0/CHANGELOG.md)
- [Commits](opensearch-project/opensearch-java@v2.15.0...v2.16.0)

---
updated-dependencies:
- dependency-name: org.opensearch.client:opensearch-java
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -64,7 +64,7 @@
         <dependency>
             <groupId>org.opensearch.client</groupId>
             <artifactId>opensearch-java</artifactId>
-            <version>2.15.0</version>
+            <version>2.16.0</version>
             <exclusions>
                 <exclusion>
                     <groupId>org.opensearch.client</groupId>