Bump starlette in /ci/test-space-egress in the pip group

Bumps the pip group in /ci/test-space-egress with 1 update: [starlette](https://github.com/encode/starlette).


Updates `starlette` from 0.37.2 to 0.40.0
- [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...0.40.0)

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

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

ci/test-space-egress/requirements.txt

@@ -20,7 +20,7 @@ pyparsing==2.4.7
 regex==2021.8.28
 requests==2.32.2
 six==1.16.0
-starlette==0.37.2
+starlette==0.40.0
 tomli==1.2.1
 typing-extensions==4.8.0
 urllib3==1.26.19