Replace outdated reference to Python 3.10 as the latest 3.x release (#1251)

Co-authored-by: Brian Rutledge <[email protected]>

Author: chriskuehl

source/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows.rst

@@ -93,7 +93,7 @@ Then, add the following under the ``build-n-publish`` section:
    :end-before: Install pypa/build
 
 This will download your repository into the CI runner and then
-install and activate Python 3.10.
+install and activate the newest available Python 3 release.
 
 And now we can build dists from source. In this example, we'll
 use ``build`` package.