build(deps): bump fastapi from 0.104.1 to 0.109.1 (#43)

Bumps [fastapi](https://github.com/tiangolo/fastapi) from 0.104.1 to 0.109.1.
- [Release notes](https://github.com/tiangolo/fastapi/releases)
- [Commits](fastapi/fastapi@0.104.1...0.109.1)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-type: direct:production
...

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Author: dependabot[bot]

poetry.lock

@@ -16,7 +16,7 @@ langcorn = "langcorn.__main__:entrypoint"
 
 [tool.poetry.dependencies]
 python = "^3.9"
-fastapi = "^0.104.1"
+fastapi = ">=0.104.1,<0.110.0"
 uvicorn = "^0.23.2"
 langchain = "^0.0.331"
 openai = "^0.28.1"