I never use the standard repos for any Linux O/S. I’ll go to the manufacturer website and download the most recent from them, like in the case of Thunderbird, also the Palemoon web browser and LibreOffice.
Sounds like you can install and run LFS
“I never use the standard repos for any Linux O/S. I’ll go to the manufacturer website and download the most recent from them.”
Wise to always go to the default repository first because it is trusted and curated. It makes it easier to install and uninstall if you like later and properly creates the menu listing for you. I just go update that one app with the terminal after installing it which will bring it up to current.