Update print/cups-filters to cups-filters-1.13.4

Changes:
1.13.4
------
- libcupsfilters: Let PPD generator for driverless printing
  not error out when there is no urf-supported or
  pwg-raster-document-resolution-supported IPP attribute,
  simply accept the default resolution also from the
  printer-resolution-default attribute or set a default value
  of 300 dpi to get a working PPD file.
- cups-browsed: Do not use deprecated names for IPP status
  constants
- cups-browsed: Corrected determination whether an IPP status
  is an error, to avoid "Unable to create/modify CUPS queue
  (Success)" and infinite repetition of a succeeded operation
  (Debian bug #852436).

(leot)