qpdf: Update to version 11.7.0

qpdf: Update to version 11.7.0

- Update from version 11.6.1 to 11.7.0
- Update of rootfile
- Changelog
    11.7.0
	* Define CPACK_NSIS_MODIFY_PATH for the Windows builds so the
	official installers will offer to modify PATH when installing
	qpdf. Fixes #1054.
	* Add QPDFAcroFormDocumentHelper::disableDigitalSignatures, which
	disables any digital signature fields, leaving their visual
	representations intact. The --remove-restrictions command-line
	argument now calls this. Fixes #1015.
	* Generate a more complete qpdf "man page" from the same source as
	qpdf --help. Fixes #1064.
	* Allow the syntax "--encrypt --user-password=user-password
	--owner-password=owner-password --bits={40,128,256}" when
	encrypting PDF files. This is an alternative to the syntax
	"--encrypt user-password owner-password {40,128,256}", which will
	continue to be supported. The new syntax works better with shell
	completion and allows creation of passwords that start with "-".
	Fixes #874.
	* When setting a check box value, allow any value other than /Off
	to mean checked. This is permitted by the spec. Previously, any
	value other than /Yes or /Off was rejected. Fixes #1056.
	* Fix to QPDF JSON: a floating point number that appears in
	scientific notation will be converted to fixed-point notation,
	rounded to six digits after the decimal point. Fixes #1079.
	* Fix to QPDF JSON: the syntax "n:/pdf-syntax" is now accepted as
	an alternative way to represent names. This can be used for any
	name (e.g. "n:/text#2fplain"), but it is necessary when the name
	contains binary characters. For example, /one#a0two must be
	represented as "n:/one#a0two" since the single byte a0 is not
	valid in JSON. Fixes #1072.
	* From M. Holger: Refactor QPDFParser for performance. See #1059
	for a discussion.
	* Update code and tests so that qpdf's test suite no longer
	depends on the output of any specific zlib implementation. This
	makes it possible to get a fully passing test suite with any
	API-compatible zlib library. CI tests with the default zlib as
	well as zlib-ng (including verifying that zlib-ng is not the
	default), but any zlib implementation should work. Fixes #774.
	* Bug fix: with --compress-streams=n, don't compress object, XRef,
	or linearization hint streams.
	* Add new C++ functions "qpdf_c_get_qpdf" and "qpdf_c_wrap" to
	qpdf-c.h that make it possible to write your own extern "C"
	functions in C++ that interoperate with the C API. See
	examples/extend-c-api for more information.
	* Bug fix from M. Holger: the default for /Columns in PNG filter
	is 1, but libqpdf was acting like it was 0.
	* Enhancement from M. Holger: add methods to Buffer to work more
	easily with std::string.
    11.6.4
	* Install fix: include cmake files with the dev component.
	* Build AppImage with an older Linux distribution to support AWS
	Lambda. Fixes #1086.
    11.6.3
        * Tweak linearization code to better handle files between 2 GB and
        4 GB in size. Fixes #1023.
        * Fix data loss bug: qpdf could discard a the character after an
        escaped octal string consisting of less than three digits. For
        content, this would only happen with QDF or when normalizing
        content. Outside of content, it could have happened in any binary
        string, such as /ID, if the encoding software used octal escape
        strings with less than three digits. This bug was introduced
        between 10.6.3 and 11.0.0. Fixes #1050.
    11.6.2
        * Bug fix: when piping stream data, don't call finish on failure
        if the failure was caused by a previous call to finish. Fixes
        #1042.
        * Push .idea directory with the beginning of a sharable JetBrains
        CLion configuration.

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>