elasticsearch-rest-client is using an old non-maintained version of httpasyncclient-4.1.4.jar

When I use latest rest client, it brings with it a dependency of an old async http client (httpasyncclient-4.1.4.jar). This client is no longer maintained. See its github page: https://github.com/apache/httpasyncclient

Not only this is a security risk, I also believe that using this old client causes multiple issues, and also related to : https://github.com/spring-projects/spring-data-elasticsearch/issues/1387 https://github.com/spring-projects/spring-data-elasticsearch/issues/1948

The expected solution: elasticsearch-rest-client should use the latest modern http client 5.x, which has the same functionality. https://github.com/apache/httpcomponents-client