### Is there an existing issue for this?

- [X] I have searched the existing issues and read the documentation

### Question

I am using serverless framework with localstack and I am unable to define an `AWS::OpenSearchService::Domain` resource. I guess I'll have to use `AWS::Elasticsearch::Domain` instead but it is deprecated. Are there any plans to add `AWS::OpenSearchService::Domain` resource soon? 

### Anything else?

_No response_
],
            },
            {
                "SourceVersion": "Elasticsearch_6.0",
                "TargetVersions": [
                    "Elasticsearch_6.3",
                    "Elasticsearch_6.4",
                    "Elasticsearch_6.5",
                    "Elasticsearch_6.7",
                    "Elasticsearch_6.8",
                ],
            },
            {
                "SourceVersion": "Elasticsearch_5.6",
                "TargetVersions": [
                    "Elasticsearch_6.3",
                    "Elasticsearch_6.4",
                    "Elasticsearch_6.5",
                    "Elasticsearch_6.7",
                    "Elasticsearch_6.8",
                ],
            },
            {"SourceVersion": "Elasticsearch_5.5", "TargetVersions": ["Elasticsearch_5.6"]},
            {"SourceVersion": "Elasticsearch_5.3", "TargetVersions": ["Elasticsearch_5.6"]},
            {"SourceVersion": "Elasticsearch_5.1", "TargetVersions": ["Elasticsearch_5.6"]},
        ]
        
        for expected_compatible_version in expected_compatible_versions:
            assert expected_compatible_version in compatible_versions
    def test_get_compatible_version_for_domain(self, opensearch_client, opensearch_create_domain):