Bump jetty-server from 9.3.9.v20160517 to 9.4.17.v20190418 in /java/JettyMavenHelloWorld#1

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dependabot/maven/java/JettyMavenHelloWorld/org.eclipse.jetty-jetty-server-9.4.17.v20190418blreay/test:dependabot/maven/java/JettyMavenHelloWorld/org.eclipse.jetty-jetty-server-9.4.17.v20190418Copy head branch name to clipboard