Bump xstream from 1.4.7 to 1.4.18 in /spring-batch-admin-parent#18

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dependabot/maven/spring-batch-admin-parent/com.thoughtworks.xstream-xstream-1.4.18GeoKnow/spring-batch-admin:dependabot/maven/spring-batch-admin-parent/com.thoughtworks.xstream-xstream-1.4.18Copy head branch name to clipboard