Error al actualizar a la última versión

[balupton (Benjamin Lupton)]

Si tu servidor no tiene swap, lo cual puedes comprobar ejecutando el comando free en tu servidor, entonces podrías añadir swap en lugar de actualizar tu servidor:

Failed to upgrade discourse instance to Feb 15 2022

You need to add some swap. Looks like you have plenty of disk, so you could add 2G or even 3G for safety. The discourse standard setup should, I think, have already set up the swap for you. Perhaps see Create a swapfile for your Linux server