libre: asciidoc: bump package revision to workaround expired key
    
    Without that fix, we have the following error while
    installing or upgrading asciidoc:
     |   > error: asciidoc: signature from "bill-auger <bill-auger@peers.community>" is unknown trust
     |   > :: File /var/cache/pacman/pkg/asciidoc-8.6.10-2.parabola1-any.pkg.tar.xz is corrupted (invalid or corrupted package (PGP signature)).
     |   > Do you want to delete it? [Y/n] error: failed to commit transaction (invalid or corrupted package)
    
    This is because the corresponding gpg key is expired.
    
    Key expirations often happen when because there are
    conflicting best security practices with key expiration
    dates: for long term software releases, it's better if
    the key don't have too short expiration dates, especially if
    users can't easily update the key, but short key expirations
    help a lot for security and for uses cases like mail, if you
    loose your key, having a short expiration date will ensure
    that people will (shortly) stop sending you mail that you
    can't decrypt.
    
    In addition keeping a key always up to date can in some case
    be very complex.
    
    Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>