Update `webpack` and `webpack-stream` to the latest version
Update `webpack` and `webpack-stream` to the latest version

Aside from being up-to-date, this may improve build time/size.

timvandermeij/pdf.js,showpad/mozilla-pdf.js,mozilla/pdf.js,Snuffleupagus/pdf.js,Snuffleupagus/pdf.js,mukulmishra18/pdf.js,websirnik/pdf.js,skalnik/pdf.js,timvandermeij/pdf.js,skalnik/pdf.js,showpad/mozilla-pdf.js,macroplant/pdf.js,nawawi/pdf.js,macroplant/pdf.js,mukulmishra18/pdf.js,showpad/mozilla-pdf.js,adlerweb/pdf.js-Touch,Shoobx/pdf.js,macroplant/pdf.js,Snuffleupagus/pdf.js,websirnik/pdf.js,mainegreen/pdf.js,Shoobx/pdf.js,mozilla/pdf.js,adlerweb/pdf.js-Touch,Rob--W/pdf.js,nawawi/pdf.js,nawawi/pdf.js,caremerge/pdf.js,caremerge/pdf.js,timvandermeij/pdf.js,Shoobx/pdf.js,mainegreen/pdf.js,mozilla/pdf.js,xavier114fch/pdf.js,Rob--W/pdf.js,xavier114fch/pdf.js