Bump setuptools from 69.2.0 to 70.0.0 in /requirements (#288)

Bumps [setuptools](https://github.com/pypa/setuptools) from 69.2.0 to 70.0.0.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](pypa/setuptools@v69.2.0...v70.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Daniel Townsend <[email protected]>

requirements/dev-requirements.txt

@@ -4,4 +4,4 @@ twine==5.0.0
 mypy==1.9.0
 pip-upgrader==1.4.15
 wheel==0.43.0
-setuptools==69.2.0
+setuptools==70.0.0