I'm using on-prem SharePoint 2013, which has an app installed. Instances of this app are installed on countless subsites. The app calls on a web-service to get some data. As part of a cloud migration effort, the web-services have been moved to AWS and we updated the app. The problem is that the old web-service is still getting hit, because the installed version of the app hasn't been upgraded. Is there any way via PowerShell (or otherwise) to force all of the installed instances of the app to upgrade?