Bump setuptools from 65.5.1 to 70.0.0 in /swmm-toolkit

Bumps [setuptools](https://github.com/pypa/setuptools) from 65.5.1 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@v65.5.1...v70.0.0)

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

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

swmm-toolkit/build-requirements.txt

@@ -1,7 +1,7 @@
 
 
 
-setuptools   == 65.5.1
+setuptools   == 70.0.0
 wheel        == 0.38.1
 scikit-build == 0.11.1
 cmake        == 3.21