Drop unnecessary requires on dconf
    
    dconf is just one of the possible gsettings backends and in some cases
    others work better. Drop the hard requires here to let the platform
    decide which backend is best. In flatpaks in particular dconf is not a
    good backend.
    
    Note that dconf is already pulled in (through recommends) by gtk3 and
    gtk4 so it's going to be always installed on regular Fedora systems.