chore(ci): improve previous-version script readability, fix bug (cherry-pick #22378)#22381

crenshaw-dev merged 1 commit intorelease-3.0argoproj/argo-cd:release-3.0from

cherry-pick-453479-release-3.0argoproj/argo-cd:cherry-pick-453479-release-3.0Copy head branch name to clipboard