Bump setuptools from 75.8.2 to 78.1.1 in /servicex_app

Bumps [setuptools](https://github.com/pypa/setuptools) from 75.8.2 to 78.1.1.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](pypa/setuptools@v75.8.2...v78.1.1)

---
updated-dependencies:
- dependency-name: setuptools
  dependency-version: 78.1.1
  dependency-type: indirect
...

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Author: dependabot[bot]