Update elasticsearch Docker tag to v8.9.1

[renovate]

This PR contains the following updates:

Package	Update	Change
elasticsearch	minor	8.8.0 -> 8.9.1

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Release Notes

elastic/elasticsearch (elasticsearch)

v8.9.1: Elasticsearch 8.9.1

Compare Source

Downloads: https://elastic.co/downloads/elasticsearch
Release notes: https://www.elastic.co/guide/en/elasticsearch/reference/8.9/release-notes-8.9.1.html

v8.8.1: Elasticsearch 8.8.1

Compare Source

Downloads: https://elastic.co/downloads/elasticsearch
Release notes: https://www.elastic.co/guide/en/elasticsearch/reference/8.8/release-notes-8.8.1.html

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