qpdf: Update to version 11.9.0

qpdf: Update to version 11.9.0

- Update from version 11.7.0 to 11.9.0
- Update of rootfile
- Changelog
    11.9.0
	* Add ENABLE_COVERAGE cmake option to assist with generating
	  coverage reports.
	* From M. Holger: add QPDFObjectHandle::writeJSON to directly
	  write a JSON representation to a pipeline. This is much faster
	  than writing the serialized result of getJSON.
	* The previous fix to #1056 was incomplete. When setting a check
	  box value, the previous fix allowed any value other than /Off to
	  mean checked. Now we also set the actual value based on the
	  allowable non-/Off value in the normal appearance dictionary.
	  Fixes #1056.
	* Add fuzz testing for JSON.
	* Add JSON::getDictItem (from m-holger)
	* Allow --overlay and --underlay to be repeated. They may appear
	  multiple times on the command-line and will be stacked in the
	  order in which they appear. In QPDFJob JSON, the overlay and
	  underlay keys may contain arrays. For compatibility, they may also
	  contain a single dictionary.
	* Add new command-line arguments --file and --range which can be
	  used within --pages in place of positional arguments. Allow --file
	  to be used inside of --overlay and --underlay as well. These new
	  options can be freely intermixed with positional arguments. Also
	  add file(), range(), and password() to QPDFJob::PagesConfig as an
	  alternative to pageSpec.
    11.8.0
	* Bug fix: treat references to older generations of objects as
	  null.
	* When recovering a file's xref table, attempt to find xref
	  streams if a traditional trailer dictionary is not found. Fixes
	  #1103.
	* Add --set-page-labels command-line argument and supporting API.
	  Fixes #939.
		  - QPDFJob::Config::setPageLabels
		  - pdf_page_label_e enumerated type
		  - QPDFPageLabelDocumentHelper::pageLabelDict
	* Support comma-separated numeric values with --collate to select
	  different group sizes from different files. Fixes #505.
	* Support "x" before a group in a numeric range to exclude a group
	  from the previous group. Details are in the manual. Fixes #564,
	  #790.
	* When flattening annotations, preserve annotations without any
	  appearance information at all, such as types /Link, /Popup, and
	  /Projection. Fixes #1039.
	* Detect overlong UTF-8 in the UTF-8 decoder, and fix detection of
	  8-bit characters in erroneous UTF-8 strings.

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