Bump xstream from 1.4.8 to 1.4.15 in /oldclonedetector#15

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masterProgramming-Systems-Lab/ioclones:masterfrom

dependabot/maven/oldclonedetector/com.thoughtworks.xstream-xstream-1.4.15Programming-Systems-Lab/ioclones:dependabot/maven/oldclonedetector/com.thoughtworks.xstream-xstream-1.4.15Copy head branch name to clipboard