cups-filters: Update to version 1.28.16

cups-filters: Update to version 1.28.16

- Update from version 1.28.14 to 1.;28 16
- Update of rootfile not required
- Changelog
    CHANGES IN V1.28.16
	- imagetoraster, imagetopdf, libcupsfilters: Added support for
	  reading the resolution of an image from its EXIF data when
	  loading it. This way we get the image reproduced in its
	  original size with "print-scaling=none" (Issue #362).
	- libcupsfilters: Replaced deprecated data types uint16 and
	  uint32. The function to read TIFF image files via libtiff in
	  cupsfilters/image-tiff.c uses the deprecated types uint16
	  and uint32. The replacements for these types are uint16_t
	  and uint32_t.
    CHANGES IN V1.28.15
	- pdftops: In pdftops identify old LaserJets more precisely
	  for working around PostScript interpreter bugs, older
	  printers need Poppler, newer models need Ghostscript
	  (Ubuntu bug #1967816).

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>