XStream upgrade to 1.4.17

h3. Problem XStream is vulnerable to security exploits including CVE-2021-29505|http://x-stream.github.io/CVE-2021-29505.html. This ticket tracks it's upgrade to 1.4.17 panel:title=Atlassian Update - July 2021|borderStyle=solid|borderColor=6554c0|titleBGColor=6554c0|bgColor=eae6ff We have upgrade...