Bump jetty.version from 9.0.5.v20130815 to 9.4.21.v20190926 in /zenvisage#2

dependabot[bot] wants to merge 1 commit intomasterrischanlab/visualization_recommendation_systems:masterfrom

dependabot/maven/zenvisage/jetty.version-9.4.21.v20190926rischanlab/visualization_recommendation_systems:dependabot/maven/zenvisage/jetty.version-9.4.21.v20190926Copy head branch name to clipboard