root/pypi: links for libcuml-cu12

root/pypi libcuml_cu12-25.6.0.tar.gz
root/pypi libcuml_cu12-25.4.0.tar.gz
root/pypi libcuml_cu12-25.2.1.tar.gz
root/pypi libcuml_cu12-25.2.0.tar.gz