Pamac update results in: uninstalling pacman violates dependency "libalpm.so=13-64", required by libpamac

Do you have pacman-contrib installed?

[Stable update] 2024-02-21 - Known Issues and Solutions - 2024-02-21

▼ pacman and pacman-contrib changes

pacman-contrib is now split out from pacman. If you have anything installed that depends on pacman-contrib, update (after you finished the Release Update) with:

sudo pacman -Syu pacman-contrib

Try this to build new version of google-chrome from AUR

pamac build google-chrome

That should not need pacman>6.1

$ pamac build google-chrome
Preparing...
Checking google-chrome dependencies...
Resolving dependencies...
Checking inter-conflicts...

To build (1):
  google-chrome  123.0.6312.105-1    AUR