Bump xstream from 1.4.7 to 1.4.13-java7 in /Java#8

dependabot[bot] wants to merge 1 commit intomasteropenml/Study-14:masterfrom

dependabot/maven/Java/com.thoughtworks.xstream-xstream-1.4.13-java7openml/Study-14:dependabot/maven/Java/com.thoughtworks.xstream-xstream-1.4.13-java7Copy head branch name to clipboard