Bump jetty-server from 9.1.2.v20140210 to 9.4.41.v20210516 in /retro/visualization#8

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dependabot/maven/retro/visualization/org.eclipse.jetty-jetty-server-9.4.41.v20210516brownsys/tracing-framework:dependabot/maven/retro/visualization/org.eclipse.jetty-jetty-server-9.4.41.v20210516Copy head branch name to clipboard