Bump fastapi from 0.115.8 to 0.115.11

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.115.8 to 0.115.11.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.8...0.115.11)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

poetry.lock

@@ -11,7 +11,7 @@ packages = [
 python = ">=3.12,<3.13"
 click = "==8.1.8"
 PyYAML = "==6.0.2"
-fastapi = "==0.115.8"
+fastapi = "==0.115.11"
 uvicorn = "==0.34.0"
 structlog = "==25.1.0"
 litellm = "==1.61.17"