Log Message:
poppler*: update to 22.02.0

Release 22.02.0:
        core:
         * Signature: Add a way to detect unsigned FormFieldSignature
         * Signature: Suport background image when using left and right text
         * Signature: Fix path where to search for Firefox NSS in Windows
         * Signature: Fix NSS code to work correctly in Windows/Android
         * Count only signature fields in PDFDoc::getNumSignatureFields
         * Minor code improvements

        qt:
         * Allow signing unsigned signature fields
         * Allow passing a background image for the signature when signing
         * Allow passing the document password when signing
         * Fix leftFontSize being ignored when signing

        glib:
         * try with utf8 password if latin1 fails
         * New method for getting all signature fields of a document
         * Fix compile with MSVC

        utils:
         * pdfsig: Fix compile with MSVC

        build system:
         * Fix NSS cmake check for MSVC