Bump starlette from 0.39.2 to 0.40.0 (#2164)

Bumps [starlette](https://github.com/encode/starlette) from 0.39.2 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](encode/starlette@0.39.2...0.40.0)

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

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

requirements-server.txt

@@ -3,4 +3,4 @@ elasticsearch-dsl==7.4.1
 fastapi==0.115.2
 mongomock==4.2.0.post1
 pymongo==4.10.1
-starlette==0.39.2
+starlette==0.40.0