Bump log4j-core from 2.13.3 to 2.15.0 in /start-xml-java7#13

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dependabot/maven/start-xml-java7/org.apache.logging.log4j-log4j-core-2.15.0daggerok/struts-examples:dependabot/maven/start-xml-java7/org.apache.logging.log4j-log4j-core-2.15.0Copy head branch name to clipboard