https://arxiv.org/pdf/2512.10783 provides - a small update for $P_{gq}$ - splitting functions at $n_f=6$, i.e. this will remove https://github.com/NNPDF/eko/blob/2e3a83409295cb6a2864e144acdfbeeba6507b9a/src/ekore/anomalous_dimensions/unpolarized/space_like/as4/fhmruvv/ggg.py#L192 and similar
