Bump jetty-server from 9.2.16.v20160414 to 9.4.41.v20210516 in /spark-2.1.1#12

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dependabot/maven/spark-2.1.1/org.eclipse.jetty-jetty-server-9.4.41.v20210516shiwendai/SparkSourceCodeLearning:dependabot/maven/spark-2.1.1/org.eclipse.jetty-jetty-server-9.4.41.v20210516Copy head branch name to clipboard