Bump xstream from 1.4.1 to 1.4.19 in /thucydides-core#192

dependabot[bot] wants to merge 1 commit intomasterthucydides-webtests/thucydides:masterfrom

dependabot/maven/thucydides-core/com.thoughtworks.xstream-xstream-1.4.19thucydides-webtests/thucydides:dependabot/maven/thucydides-core/com.thoughtworks.xstream-xstream-1.4.19Copy head branch name to clipboard