Bump struts2-core from 2.5.20 to 2.5.30 in /ssh-demo#23

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dependabot/maven/ssh-demo/org.apache.struts-struts2-core-2.5.30zhajinyi/JavaStudy:dependabot/maven/ssh-demo/org.apache.struts-struts2-core-2.5.30Copy head branch name to clipboard