chore(package): update pdfjs-dist to version 1.6.263 (#919)
chore(package): update pdfjs-dist to version 1.6.263 (#919)

https://greenkeeper.io/
SpatialVision/jsPDF,yWorks/jsPDF,jutunen/jsPDF-table_2,yWorks/jsPDF,MrRio/jsPDF,MrRio/jsPDF,MrRio/jsPDF,yWorks/jsPDF,SpatialVision/jsPDF,jutunen/jsPDF-table_2