if you want to use community version - you have not this option, as uipath updates automatically. Even if you will get old installation package, when you will have first internet connection - it will download and install latest version.
Stable version (without auto update) is only for Enterprise edition users, so as I said before - if you have license, write to your personal sales manager who sold it to you, and he will provide enterprise version installation files for you. If you don’t have license - even if you will somehow get enterprise installer and will activate it with community license - it will be auto updated to the latest stable version.