Bump fastapi from 0.138.0 to 0.139.0

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.138.0 to 0.139.0.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.138.0...0.139.0)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.139.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -3,7 +3,7 @@ annotated-types==0.7.0
 anyio==4.14.0
 certifi==2026.6.17
 click==8.4.1
-fastapi==0.138.0
+fastapi==0.139.0
 h11==0.16.0
 httpcore==1.0.9
 httpx==0.28.1