bump version to 3.20.3
bump version to 3.20.3

fiverr/prerender,PaigeeWorld/prerender,l0ne/prerender,gamejolt/prerender,netlify/prerender,GerardoNevarez/prerender,SIXNetworks/prerender,inventaire/prerender,mgmco/prerender,LendioDevs/prerender,wcandillon/prerender,JuoCode/prerender,inventaire/prerender,bookbottles/prerender,prerender/prerender,viovendi/prerender,netconstruct/prerender,fiverr/prerender,GrabCAD/prerender,jahmad-fareportal/prerender,icilalune/prerender,challengerdeep/prerender,JoaquinSiabra/prerender,dwdm/prerender,ArnaudValensi/prerender-schedule-from-sitemap,goabout/prerender,goabout/prerender,oqv/prerender,Kaliber/prerender