Update dependency elasticsearch to v8.16.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
elasticsearch	8.15.1 -> 8.16.0

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Release Notes

elastic/elasticsearch-py (elasticsearch)

### [`v8.16.0`](https://redirect.github.com/elastic/elasticsearch-py/compare/v8.15.1...v8.16.0) [Compare Source](https://redirect.github.com/elastic/elasticsearch-py/compare/v8.15.1...v8.16.0)

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