Use typhoeus adapter for Elasticsearch client

What does this MR do and why?

We get Faraday connection issues because the client is unable to keep the connection open. Adding the typhoeus adapter will allow our Elastic client to have a "keep-alive" connection, as that is not included by default.

From Elastic's documentation:

Keep in mind, that for optimal performance, you should use an HTTP library which supports persistent ("keep-alive") HTTP connections.

This is behind the feature flag: use_typhoeus_elasticsearch_adapter

Related to: #346288 (closed)

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