We forced an older version of some maki-related dependencies in https://phabricator.wikimedia.org/rGMKT0b0c68d4ee564c61d27cc994450b8a98fc149d12
This is because new versions were pulling in Mapnik, causing problems with both node-mapnik 3.5 and 3.6 being installed. The 3.5 was being installed as part of Kartotherian and being built from source (see node-mapnik + glibc + semver violations) and 3.6 was not desired.
The idea of needing Mapnik to install an icon library is, put simply, insane. Rather than being stuck on an old version forever, we need to figure out what is going on.
The fix will probably involve some kind of PR to some maki-related repos owned by Mapbox.