Docs CI fails because mkdocs-macros-plugin requires pkg_resources #210

Description:

The docs build in CI is currently failing during makim docs.build because mkdocs-macros-plugin imports pkg_resources, but setuptools is not installed in the CI environment. Since pkg_resources is provided by setuptools, the docs dependencies likely need to declare setuptools explicitly or update mkdocs- macros-plugin to a version that no longer relies on it.

  File ".../site-packages/mkdocs_macros/context.py", line 19, in <module>
      import pkg_resources
  ModuleNotFoundError: No module named 'pkg_resources'

https://github.com/sugar-org/sugar/actions/runs/27030058939/job/79779862710#step:7:57