Feature: Add Support For Elasticsearch 9

[negatic]

[alexanderankin]

what happens when you try to pass that image into the constructor?

[adamzanyline]

In such case:

    else:
        raise ValueError(f"Unknown elasticsearch version given: {version}")

as per https://github.com/testcontainers/testcontainers-python/blob/main/modules/elasticsearch/testcontainers/elasticsearch/init.py#L55, which makes it impossible to test against ESv9 at the moment.