Bump fastapi from 0.115.11 to 0.115.12 (#1309)

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.115.11 to 0.115.12.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.11...0.115.12)

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

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

Author: dependabot[bot]

poetry.lock

@@ -11,7 +11,7 @@ packages = [
 python = ">=3.12,<3.13"
 click = "==8.1.8"
 PyYAML = "==6.0.2"
-fastapi = "==0.115.11"
+fastapi = "==0.115.12"
 uvicorn = "==0.34.0"
 structlog = "==25.2.0"
 llama_cpp_python = "==0.3.5"