Add simple update.sh script for easy version bumps
Add simple update.sh script for easy version bumps

Luit/golang,akerbis/armhf-golang,armbuilds/golang,mattrobenolt/golang,essentier/golang,sthapaun/golang,armhf-docker-library/golang,infosiftr/golang,lindenlab/golang,tbetbetbe/golang,docker-library/golang,attilaolah/golang