Bump sse-starlette from 2.0.0 to 2.1.2

Bumps [sse-starlette](https://github.com/sysid/sse-starlette) from 2.0.0 to 2.1.2.
- [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...v2.1.2)

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

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

pyproject.toml

@@ -31,7 +31,7 @@ einops = "*"
 pydantic = ">2,<3"
 stripe = "*"
 transformers = "*"
-sse-starlette = "2.1.0" 
+sse-starlette = "2.1.2" 
 uvicorn = "*"
 shortuuid = "*"