Update Elasticsearch and Python Client

[fivegrant]

Elasticsearch is deprecating the use of query for body as per this elasticsearch issue. This isn't breaking at the moment, but might cause problems if libraries are updated in the future.

The part of the issue that discusses this:

The body parameter for APIs are deprecated
For JSON requests each field within the top-level JSON object will become it's own parameter of the API with full type hinting

# ✅ New usage:
es.search(query={...})

# ❌ Deprecated usage:
es.search(body={"query": {...}})

[fivegrant]

Updating the Elasticsearch client for Python might be a pain because it might cause a product mismatch with Elasticsearch: The client noticed that the server is not Elasticsearch and we do not support this unknown product. Seems like Elasticsearch itself would also have to be updated