build(deps): update setuptools requirement

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@v70.2.0...v75.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -160,7 +160,7 @@ splinter==0.21.0
 pytest-splinter==3.3.2
 pytest-django==4.8.0
 pip==24.1.2
-setuptools>=70.2.0,<70.3.0
+setuptools>=70.2.0,<75.7.0
 Twisted==24.3.0
 pixelmatch==0.3.0
 factory-boy==3.3.0