Hi @sdouglasmcsonova ,
Stage and Production environment is auto updated to the latest version and is managed by Adobe. You don't have to invoke any process in order to update. To update the dev server on cloud, whenever new update is available, in the cloud manager UI, you will see "update available" option. You cannot select any specific version, It will update to the latest available version.
Also, with the upgrades, you will be testing your code on local, then dev, to make sure nothing breaks, and then same will be pushed to latest version. Moreover there are multiple checks that runs when deploying to stage and prod which make sure non compliant code will result in build failure.
More details you will find here:
https://experienceleague.adobe.com/docs/experience-manager-cloud-service/content/implementing/using-cloud-manager/manage-environments.html?lang=en