Bump starlette from 0.31.0 to 0.31.1

Bumps [starlette](https://github.com/encode/starlette) from 0.31.0 to 0.31.1.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](Kludex/starlette@0.31.0...0.31.1)

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

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

Author: dependabot[bot]

requirements.txt

@@ -16,7 +16,7 @@ pytest-xdist==3.3.1
 pytest==7.4.0
 quart==0.18.4
 reactivex==4.0.4
-starlette==0.31.0
+starlette==0.31.1
 cbitstruct==1.0.9
 cloudevents==1.9.0
 pydantic==1.10.12