poppler: Update to version 21.11.0

poppler: Update to version 21.11.0

- Update from 21.07.0 to 21.11.0
- Update of rootfile
- find-dependencies run to check so bump. No issues found
- Changelog
    Release 21.11.0:
        core:
         * Fix rendering of some non-standard confirming annotations
         * Support rendering of some non-standard Type3 charprocs. Issue #1150
         * TextOutputDev: Respect orientation when selecting words. Issue #499
         * CairoOutputDev: Don't override the antialias settings from the cairo_t
         * StructElement: support MCID in XObjects
         * Fix detection of monospace fonts
         * Ignore Adobe-Identity for non embedded CID fonts
         * PageLabelInfo::labelToIndex: work on some special no style intervals
         * Fix crash in malformed files
         * Minor code improvements
        utils:
         * pdfinfo: add -url option to print all URLs in a PDF
         * pdftohtml: document what zoom means in regard to DPI
        qt6:
         * Require Qt 6.1
         * Minor code improvements
    Release 21.10.0:
        core:
         * Add support for setting custom stamp annotations
         * Add default appearance for the well known stamp names
         * Correct encoding of signature's properties Reason & Location
         * Splash: Fix rendering of some odd patterns
         * SignatureHandler::validateCertificate: Add option to not do OCSP revocation check
         * SignatureHandler::validateCertificate: Add support for AIA fetching to verify certificates
         * greallocn: if memory allocation fails, free the previous pointer to avoid memory leak
         * Fix issues with malformed files
         * Internal code improvements
        utils:
         * pdfsig: Add a way to list certificate nicknames
         * pdfsig: You can now add signatures from pdfsig
         * pdfsig: Add option to not do OCSP revocation check
         * pdfsig: Add option for AIA fetching to verify certificates
         * pdfinfo: Add -custom option to print custom metadata
         * pdfinfo: add metadata flags
        qt:
         * Add support for setting custom stamp annotations
         * Add getters for signature's properties Reason & Location
         * Internal code improvements
        glib:
         * Remove incorrect PopplerAttachment deprecation
    Release 21.09.0:
        core:
         * Splash: Massive spped improvement on files that use lots of save/restore (q/Q) operators
         * Correct decoding of signature properties Reason & Location when they are Unicode
         * Fix issues with malformed files
         * MSVC build fixes
        build system:
         * Call cmake_minium_required() before project()
         * Always append to CMAKE_{C,CXX}_FLAGS_${CMAKE_BUILD_TYPE}
         * correctly forward user-provided flags to try_compile()
    Release 21.08.0:
        core:
         * Add API to allow addition and modification of outlines into a PDF
         * Use additional samples to test for constant parts of an axial gradient
         * forms: Create fallback fonts for some well known font names
         * Support reading the PDF Version from the Catalog
         * Fix XRef::copy when there are modified objects
         * Take into account that Date string may be in unicode
         * JBIG2Stream: Fix regression in "Do not consider a size-0 to be an error"
         * Replace a local bubble sort implementation by std::sort
         * Fix issues with malformed files
        build system:
         * Better error message when libjpeg is not found
         * Better error messages when libopenjpeg2 is not found
        qt5/qt6:
         * Document that a document has to outlive its pages
         * Make getPdfVersion return a dedicated version object
        glib:
         * mimick TextSelectionDumper logic change for spaceAfter

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