deps(go): bump module github.com/zitadel/zitadel-go/v3 to v3.21.0#323

updateclibot[bot] wants to merge 2 commits intomainupdatecli/udash:mainfrom

updatecli_main_570be92cdb14b8bd29c7a937f80644b925c46798c71b2f3d4f86d9ac920f1e0cupdatecli/udash:updatecli_main_570be92cdb14b8bd29c7a937f80644b925c46798c71b2f3d4f86d9ac920f1e0cCopy head branch name to clipboard