Update setuptools requirement from <67.7.0 to <68.1.0 in /requirements (

#18144)

Updates the requirements on [setuptools](https://github.com/pypa/setuptools) to permit the latest version.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](pypa/setuptools@0.6...v68.0.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/app/test.txt

@@ -12,5 +12,5 @@ httpx ==0.24.1
 trio <0.22.0  # strict https://github.com/python-trio/trio/pull/2213
 pympler
 psutil <=5.9.5
-setuptools <67.7.0
+setuptools <68.1.0
 requests-mock <=1.10.0