Bump starlette from 0.37.2 to 0.38.1 in /ci/latest

Bumps [starlette](https://github.com/encode/starlette) from 0.37.2 to 0.38.1.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.37.2...0.38.1)

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

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

ci/latest/requirements.txt

@@ -4,7 +4,7 @@
 nextline==0.7.15
 apluggy==1.0.1
 dynaconf==3.2.5
-starlette==0.37.2
+starlette==0.38.1
 strawberry-graphql==0.235.1
 websockets==12.0.0
 rich==13.7.1