CI: flatpak builds do not use current branch
In the CI configuration a straight flatpak-build is used. We want flatpak-builder --stop-at=geary and then manually go through the commands in order to build the working branch rather than just master.
In the CI configuration a straight flatpak-build is used. We want flatpak-builder --stop-at=geary and then manually go through the commands in order to build the working branch rather than just master.