Twig sort() not working with spaceship operator (<=>)

[mjmaax]

I am using Grav 1.7.46 with PHP 8.1. Whenever I try to use the twig Sort() function, I get an error on the spaceship operator (<=>):

Twig \ Error \ SyntaxError
Unexpected token "operator" of value ">".

I think this issue is discussed here: https://github.com/symfony/symfony/issues/33895