vivaldi-snapshot.rb: upgrade to v1.0.228.3
vivaldi-snapshot.rb: upgrade to v1.0.228.3

lukasbestle/homebrew-versions,bimmlerd/homebrew-versions,nicday/homebrew-versions,tomschlick/homebrew-versions,pquentin/homebrew-versions,lukaselmer/homebrew-versions,coeligena/homebrew-verscustomized,elovelan/homebrew-versions,dictcp/homebrew-versions,noamross/homebrew-versions,chadcatlett/caskroom-homebrew-versions