Log Message:
Update cups-filters to 1.28.9

NEWS - OpenPrinting CUPS Filters v1.28.9 - 2021-06-15
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CHANGES IN V1.28.9

       - libcupsfilters: Silenced compiler warnings
       - libcupsfilters: Removed duplicate code in the
         apply_filters() function.
       - driverless: If there are no driverless IPP printers
         available let "driverless" terminate with exit code 0 and
         not 1, to follow CUPS' standard of backends in discovery
         mode terminating with 0 if there are no appropriate printers
         found (Issue #375).
       - gstoraster, foomatic-rip: Fixed Ghostscript command line for
         counting pages as it took too long on PDFs from evince when
         printing DjVu files (Issue #354, Pull request #371, Ubuntu
         bug #1920730).
       - cups-browsed: Renamed ldap_connect() due to conflict in
         new openldap (Issue #367, Pull request #370).
       - pdftoraster: Free color data after processing of each page
         (Pull request #363).
       - cups-browsed: Always save "...-default" option entries
         from printers.conf, regardless of presence or absense
         of PPD file (Pull request #359).
       - cups-browsed: Start after network-online.target (Pull
         request #360).
       - texttopdf: Set default margins when no PPD file is used
         (Pull request #356).