build(deps): update starlette requirement in /requirements

Updates the requirements on [starlette](https://github.com/encode/starlette) to permit the latest version.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.1.0...0.41.3)

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

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

requirements/serve.txt

@@ -7,7 +7,7 @@ graphviz >=0.19, <=0.20.1
 tqdm >4.60, <=4.65.0
 fastapi >0.65, <=0.100.0
 pydantic >1.8.1, <=2.1.1
-starlette <=0.31.0
+starlette <=0.41.3
 uvicorn[standard] >=0.12.0, <=0.23.2
 aiofiles >22.1.0, <=23.1.0
 jinja2 >=3.0.0, <3.2.0