The Elasticsearch REST Sniffer is not using the latest versions, there there has been a lot of CVEs on the currently used versions. I'm not sure they are relevant to our usage, but let's not take any risk and upgrade if possible.

Ideally, we should also send a PR upstream for the Elasticsearch REST Sniffer to upgrade their dependency.
See here: https://github.com/elastic/elasticsearch/blob/master/buildSrc/version.properties#L7

CC Guillaume Smet