opensearch-java compatibility is incorrect in OpenSearch 1.3 docs

[channel-dante]

What's confusing?

According to the opensearch official document(link), the 1.3.x version of opensearch also guides installing the 2.x version of opensearch-java.

However, this is different from the version compatibility table discussed here in this repository (link).

What do I want to know?

1. I am using version 1.3.2 of opensearch through AWS. Can I use the 2.x version of opensearch-java? Below is the opensearch information via endpoint.
2. the latest version of opensearch-java 2.x has all the APIs for the latest versions of OpenSearch 1.x and 2.x ?
3. If there are no problems with breaking changes (1.3 -> 2.0.0, link) , is it okay to use 2.x?

Since version 1.x is no longer being upgraded from 1.0.0, I would like to use version 2.x if possible.

{
  "name" : ...,
  "cluster_name" : ...,
  "cluster_uuid" : ...,
  "version" : {
    "distribution" : "opensearch",
    "number" : "1.3.2",
    "build_type" : "tar",
    "build_hash" : "unknown",
    "build_date" : "2023-08-..",
    "build_snapshot" : false,
    "lucene_version" : "8.10.1",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "The OpenSearch Project: https://opensearch.org/"
}

[dblock]

The documentation in this repo is correct. I'll move this to the documentation repo to correct 1.3 docs on client compat.

[hdhalter]

@kolchfa-aws - Is this similar to #2741?

[kolchfa-aws]

@VachaShah as the expert on the Java client, could you comment on this?

[hdhalter]

We have added a note about using the Java client 2.0 with OpenSearch 1.x: https://github.com/opensearch-project/opensearch-java/blob/main/COMPATIBILITY.md#upgrading