Bump jetty-server from 9.3.14.v20161028 to 9.4.17.v20190418#2

dependabot[bot] wants to merge 1 commit intomasteractive-agent/test:masterfrom

dependabot/maven/org.eclipse.jetty-jetty-server-9.4.17.v20190418active-agent/test:dependabot/maven/org.eclipse.jetty-jetty-server-9.4.17.v20190418Copy head branch name to clipboard