I had a few small problems when updating:
- franz needed electron25, and was blocking the update.
- deinstalling franz made it possible to update
- after the update the pacman key infrastructure seemd to be broken,
- i was not able to install franz again from AUR
- Following Pacman troubleshooting - Manjaro i was able to repair the key infrastructure
- Following Failed installing icu (75.1-1) breaks dependency 'libicui18n.so=74-64' required electron25 - #6 by cscs showed me to use electron25-bin instead of electron
After that i was able to reinstall franz 
