chore(deps): update dependency openai to v2.7.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
openai	==2.6.1 -> ==2.7.0

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Release Notes

openai/openai-python (openai)

v2.7.0

Compare Source

Full Changelog: v2.6.1...v2.7.0

Features

• api: Realtime API token_limits, Hybrid searching ranking options (5b43992)
• api: remove InputAudio from ResponseInputContent (bd70a33)

Bug Fixes

• client: close streams without requiring full consumption (d8bb7d6)
• readme: update realtime examples (#​2714) (d0370a8)
• uploads: avoid file handle leak (4f1b691)

Chores

• internal/tests: avoid race condition with implicit client cleanup (933d23b)
• internal: grammar fix (it's -> its) (f7e9e9e)

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