Bump sse-starlette from 2.0.0 to 2.1.3

Bumps [sse-starlette](https://github.com/sysid/sse-starlette) from 2.0.0 to 2.1.3.
- [Release notes](https://github.com/sysid/sse-starlette/releases)
- [Changelog](https://github.com/sysid/sse-starlette/blob/main/CHANGELOG.md)
- [Commits](sysid/sse-starlette@v2.0.0...v2.1.3)

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

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

requirements.txt

@@ -5,7 +5,7 @@ pytest
 torch 
 einops
 tiktoken
-sse-starlette==2.0.0
+sse-starlette==2.1.3
 uvicorn
 loguru
 pydantic