Bump starlette from 0.27.0 to 0.40.0

Bumps [starlette](https://github.com/encode/starlette) from 0.27.0 to 0.40.0.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.27.0...0.40.0)

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

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

requirements.txt

@@ -12,6 +12,6 @@ pydantic_core==2.10.1
 pymongo==4.6.0
 python-dotenv==1.0.0
 sniffio==1.3.0
-starlette==0.27.0
+starlette==0.40.0
 typing_extensions==4.8.0
 uvicorn==0.24.0.post1