AWS Opensearch and NEST

Hi, it seems like the dot net client library(NEST) is not updated with OpenSearvch V1.3

The OpenSearch project was first announced in January 2021 as an open-source fork of Elasticsearch 7.10.2.

Please enable the compatibility mode in the OpenSearch domain and try again with NEST.

Following command will enable compatibility mode in existing OpenSearch domain:

PUT /_cluster/settings
{
  "persistent" : {
    "compatibility.override_main_response_version" : true
  }
}