Gnucash 5.3 has been released and should be bumped. If maintainer allows it, I'd be willing to add the rebuild for that.
*ebuild See here for update announcement: https://www.gnucash.org/news.phtml See here for release source: https://github.com/Gnucash/gnucash/releases/tag/5.3
gnucash-5.3 is available in my overlay: https://github.com/stefantalpalaru/gentoo-overlay
Thanks Stefan! Bumped.