Bump omniauth from 1.9.1 to 2.0.0#56

dependabot[bot] wants to merge 1 commit intomasterWidgetry/rails-api-template:masterfrom

dependabot/bundler/omniauth-2.0.0Widgetry/rails-api-template:dependabot/bundler/omniauth-2.0.0Copy head branch name to clipboard