Updated poppler packages fix security vulnerabilities

In Poppler 0.59.0, a NULL Pointer Dereference exists in the XRef::parseEntry() function in XRef.cc via a crafted PDF document. (CVE-2017-14517) In Poppler 0.59.0, memory corruption occurs in a call to Object::streamGetChar in Object.h after a repeating series of Gfx::display, Gfx::go, Gfx::execOp, Gfx::opShowText, and Gfx::doShowText calls (aka a Gfx.cc infinite loop). (CVE-2017-14519) In Poppler 0.59.0, a floating point exception occurs in Splash::scaleImageYuXd() in Splash.cc, which may lead to a potential attack when handling malicious PDF files. (CVE-2017-14520)