chore(deps): upgrade jenkins-x-plugins/jx-preview to version 0.7.3#8929

jenkins-x-bot merged 1 commit intomainjenkins-x/jx:mainfrom

pr-caf25c8a-d1a4-4c5e-b8b3-5a8ce935305fjenkins-x/jx:pr-caf25c8a-d1a4-4c5e-b8b3-5a8ce935305fCopy head branch name to clipboard