Bump starlette from 0.37.2 to 0.40.0

Bumps [starlette](https://github.com/encode/starlette) from 0.37.2 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](Kludex/starlette@0.37.2...0.40.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -13,6 +13,6 @@ python-jose==3.3.0
 rsa==4.9
 six==1.16.0
 sniffio==1.3.1
-starlette==0.37.2
+starlette==0.40.0
 typing_extensions==4.11.0
 uvicorn==0.29.0