@maruja You will have to make a clean build, since upstream has used the same filename although it is technicaly not the same version of GE. That means that your aur helper (probably pamac) used a cached file to build but its not the correct one. Next time upstream will release a hotfix in this manner, the filename will change so this will not happen again. ;)
For now, open a terminal and issue the following command before updating.
$ pamac clean
Pinned Comments
PedroHLC commented on 2021-07-27 19:39 (UTC)
The "chaotic-aur" co-maintainer is a bot that pulls any merged PR in https://github.com/chaotic-aur/pkgbuild-proton-ge-custom-bin back to this package. So if you guys have contributions or bump versions earlier than the maintainer, please share them as PRs. The commits will keep your authorship.
Happy gaming!