Use checkout_release_branch from a8c-ci-toolkit - #25873

Use checkout_release_branch from a8c-ci-toolkit#25873

AliSoftware merged 2 commits into

trunkwordpress-mobile/WordPress-iOS:trunkfrom

ainfra-2828-use-toolkit-checkout-release-branchwordpress-mobile/WordPress-iOS:ainfra-2828-use-toolkit-checkout-release-branchCopy head branch name to clipboard