chore(deps): bump starlette in /examples/fastapi-background-tasks/app

Bumps [starlette](https://github.com/Kludex/starlette) from 0.41.2 to 1.3.1.
- [Release notes](https://github.com/Kludex/starlette/releases)
- [Changelog](https://github.com/Kludex/starlette/blob/main/docs/release-notes.md)
- [Commits](Kludex/starlette@0.41.2...1.3.1)

---
updated-dependencies:
- dependency-name: starlette
  dependency-version: 1.3.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/fastapi-background-tasks/app/requirements.txt

@@ -8,7 +8,7 @@ pydantic==2.9.2
 pydantic-core==2.23.4
 requests==2.32.3
 sniffio==1.3.1
-starlette==0.41.2
+starlette==1.3.1
 typing-extensions==4.12.2
 urllib3==2.2.3
 uvicorn==0.32.0