Build(deps): bump fastapi from 0.121.1 to 0.123.4 (#303)

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.121.1 to 0.123.4.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.121.1...0.123.4)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.123.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-async.txt

@@ -3,4 +3,4 @@
 
 # async web framework
 uvicorn==0.38.0
-fastapi==0.121.1
+fastapi==0.123.4