Remove twine requirement for upload (#18430)

* Remove twine requirement for upload

#5488 added documentation that you need to use twine to discourage `setup.py upload` (#3797). `setup.py upload` has since been removed from setuptools and errors with `error: invalid command 'upload'`. We got user questions in uv concerned about whether they can use `uv publish` instead of twine, so I'd like to remove or change that sentence to indicate that you can use twine or any other compatible tool, just not `setup.py`.

* Update messages.pot

* Review

Author: konstin