Update npm without npm

Question

If I try to update my npm via npm update -g npm I'll get an error: npm ERR! Unexpected token '.'

Since this is a known bug: https://github.com/npm/cli/issues/4234. How do I upgrade my npm without having to use npm itself?

I am using Windows and nvm for Windows.

Versions:

PS> npm -v           
8.8.0
PS> node -v
v18.1.0