Bump starlette from 0.25.0 to 0.27.0 in /example/logger_app

Bumps [starlette](https://github.com/encode/starlette) from 0.25.0 to 0.27.0.
- [Release notes](https://github.com/encode/starlette/releases)
- [Changelog](https://github.com/encode/starlette/blob/master/docs/release-notes.md)
- [Commits](encode/starlette@0.25.0...0.27.0)

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

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

example/logger_app/requirements.txt

@@ -27,7 +27,7 @@ requests==2.27.1; python_version >= "3.6" and python_full_version < "3.0.0" or p
 rsa==4.8; python_version >= "3.6" and python_version < "4" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version >= "3.6")
 six==1.16.0; python_version >= "3.6" and python_full_version < "3.0.0" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.6") or python_full_version >= "3.6.0" and python_version >= "3.6" and (python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.4.0" and python_version >= "3.6")
 sniffio==1.2.0; python_version >= "3.6" and python_full_version >= "3.6.2"
-starlette==0.25.0; python_version >= "3.6" and python_full_version >= "3.6.1"
+starlette==0.27.0; python_version >= "3.6" and python_full_version >= "3.6.1"
 typing-extensions==4.1.1; python_version >= "3.6" and python_full_version >= "3.6.1"
 urllib3==1.26.9; python_version >= "3.6" and python_full_version < "3.0.0" or python_full_version >= "3.6.0" and python_version < "4" and python_version >= "3.6"
 uvicorn[standard]==0.17.6; python_version >= "3.6"