chore(deps): bump the all-dependencies group across 1 directory with 7 updates

Bumps the all-dependencies group with 6 updates in the /python/agents/podcast_transcript_agent directory:

| Package | From | To |
| --- | --- | --- |
| [fastapi](https://github.com/fastapi/fastapi) | `0.120.2` | `0.127.0` |
| [google-adk](https://github.com/google/adk-python) | `1.17.0` | `1.21.0` |
| [google-generativeai](https://github.com/google/generative-ai-python) | `0.8.5` | `0.8.6` |
| [pydantic](https://github.com/pydantic/pydantic) | `2.12.3` | `2.12.5` |
| [pytest](https://github.com/pytest-dev/pytest) | `8.4.2` | `9.0.2` |
| [uvicorn](https://github.com/Kludex/uvicorn) | `0.38.0` | `0.40.0` |



Updates `fastapi` from 0.120.2 to 0.127.0
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.120.2...0.127.0)

Updates `google-adk` from 1.17.0 to 1.21.0
- [Release notes](https://github.com/google/adk-python/releases)
- [Changelog](https://github.com/google/adk-python/blob/main/CHANGELOG.md)
- [Commits](google/adk-python@v1.17.0...v1.21.0)

Updates `google-generativeai` from 0.8.5 to 0.8.6
- [Release notes](https://github.com/google/generative-ai-python/releases)
- [Changelog](https://github.com/google-gemini/deprecated-generative-ai-python/blob/main/RELEASE.md)
- [Commits](google-gemini/deprecated-generative-ai-python@v0.8.5...v0.8.6)

Updates `pydantic` from 2.12.3 to 2.12.5
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.12.3...v2.12.5)

Updates `pytest` from 8.4.2 to 9.0.2
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.4.2...9.0.2)

Updates `pytest-asyncio` from 1.2.0 to 1.3.0
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v1.2.0...v1.3.0)

Updates `uvicorn` from 0.38.0 to 0.40.0
- [Release notes](https://github.com/Kludex/uvicorn/releases)
- [Changelog](https://github.com/Kludex/uvicorn/blob/main/docs/release-notes.md)
- [Commits](Kludex/uvicorn@0.38.0...0.40.0)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.127.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-dependencies
- dependency-name: google-adk
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-dependencies
- dependency-name: google-generativeai
  dependency-version: 0.8.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: pydantic
  dependency-version: 2.12.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
- dependency-name: pytest
  dependency-version: 9.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-dependencies
- dependency-name: pytest-asyncio
  dependency-version: 1.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-dependencies
- dependency-name: uvicorn
  dependency-version: 0.40.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all-dependencies
...

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Author: dependabot[bot]