Update dependency elasticsearch to v8.15.0

[openverse-bot]

This PR contains the following updates:

Package	Type	Update	Change
elasticsearch	packages	minor	==8.14.0 -> ==8.15.0
elasticsearch	project.dependencies	minor	==8.14.0 -> ==8.15.0

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Release Notes

elastic/elasticsearch-py (elasticsearch)

v8.15.0: 8.15.0

Compare Source

• Added the Connector API (#​2623)
• Added support for semantic_text and semantic query.
• Added support for sequences of job id, model id and tags where applicable in ML APIs
• Added dry_run and force parameters to the Perform inference API
• Added optional Arrow deserialization support (#​2632)
• Merged Query Ruleset API into new Query Rules API (#​2607)
• Added mapping code examples (#​2596)
• Fixed reference docs (#​2629)
• Dropped Python 3.7 support (#​2618)

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