Bump setuptools from 65.5.1 to 70.0.0 in /docs (#114)

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
...

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

docs/requirements.txt

@@ -1,4 +1,4 @@
-setuptools==65.5.1
+setuptools==70.0.0
 sphinxcontrib-apidoc==0.3.0
 docutils<0.19
 nbsphinx==0.9.4