Update dependency fastapi to v0.127.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
fastapi (changelog)	==0.126.0 -> ==0.127.0

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Release Notes

fastapi/fastapi (fastapi)

v0.127.0

Compare Source

Breaking Changes

• 🔊 Add deprecation warnings when using pydantic.v1. PR #​14583 by @​tiangolo.

Translations

• 🔧 Add LLM prompt file for Korean, generated from the existing translations. PR #​14546 by @​tiangolo.
• 🔧 Add LLM prompt file for Japanese, generated from the existing translations. PR #​14545 by @​tiangolo.

Internal

• ⬆️ Upgrade OpenAI model for translations to gpt-5.2. PR #​14579 by @​tiangolo.

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Configuration

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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