root/pypi: links for karabo-gui

root/pypi karabo_gui-2.21.4.tar.gz
root/pypi karabo_gui-2.21.4-py3-none-any.whl
root/pypi karabo_gui-2.21.3.tar.gz
root/pypi karabo_gui-2.21.3-py3-none-any.whl