Hi!

When building dependents of r-posterior (https://issues.guix.gnu.org/78105), it turns out
r-delayedmatrixstats fails. In order to fix this, we need to
update r-iranges, which in turn depends on an updated r-s4arrays.

This patch updates r-s4arrays from 0.44.0 to 0.46.0. I have built all
directly dependent packages successfully, except for
r-voltron, which has been failing on master since the 15/16:th of April. 

Thanks!
Tor-björn Claesson