This is a zombie package.
It does not exist in the repos or the AUR.
And is the actual cause of your problem.
I would suggest replacing that with nodejs
sudo pacman -Syu nodejs
(there are other lts versions in the repos if for some reason you need an older one [nodejs-lts-iron, etc] … but if none of this is familiar to you … then it only makes sense to use latest repo version)
When you are done with that … go ahead and remove the superfluous (and arguably dangerous) outdated icu package.
sudo pacman -Rns icu73-bin