UnsupportedProductError with elasticsearch-py 7.14

[lwrubel]

See also #141.

The recently released 7.14.0 version of the elasticsearch library introduces a new exception, UnsupportedProductError. That error is being raised: ElasticSearch error: The client noticed that the server is not a supported distribution of Elasticsearch.

Need to determine why our version of Elasticsearch (7.9.2 from an official docker image) is being seen as an unsupported version. There are articles about recent changes in Elasticsearch licensing (example) but according to Elasticsearch's FAQ it would seem our usage is acceptable as is.