Bump xstream from 1.3.1 to 1.4.10-java7 in /mahout#2

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dependabot/maven/mahout/com.thoughtworks.xstream-xstream-1.4.10-java7Programming-Systems-Lab/kabu:dependabot/maven/mahout/com.thoughtworks.xstream-xstream-1.4.10-java7Copy head branch name to clipboard