Bump xstream from 1.3.1 to 1.4.18 in /stompjms-client#44

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dependabot/maven/stompjms-client/com.thoughtworks.xstream-xstream-1.4.18fusesource/stompjms:dependabot/maven/stompjms-client/com.thoughtworks.xstream-xstream-1.4.18Copy head branch name to clipboard