[Snyk] Upgrade org.eclipse.jetty:jetty-server from 9.4.26.v20200117 to 9.4.27.v20200227#12

snyk-bot wants to merge 1 commit intomastervaadin-developer/security-for-flow:masterfrom

snyk-upgrade-0025bd768cf1a4c8e9bf11d00aec2aacvaadin-developer/security-for-flow:snyk-upgrade-0025bd768cf1a4c8e9bf11d00aec2aacCopy head branch name to clipboard