How to completely disable Firefox updates?

Hello, I'm looking for a way to completely prevent Firefox updates. I want to disable automatic updates as well as alerts and invitations to update. I would like to keep the possibility of doing it manually. I just want Firefox to never mention it to me.

I'm aware of the "potential risks."

My online searches haven't yielded anything except for an absolutely incomprehensible link:

https://github.com/mozilla/policy-templates/blob/master/README.md#disableappupdate

Perhaps there's an Add-on that does this. If you are aware of a solution, I would appreciate it.

Best regards