Bump uvicorn from 0.25.0 to 0.27.0

Bumps [uvicorn](https://github.com/encode/uvicorn) from 0.25.0 to 0.27.0.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.25.0...0.27.0)

---
updated-dependencies:
- dependency-name: uvicorn
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]