make build-docs-preview-v2 fails

[idsulik]

Tried to build make build-docs-preview-v2(as well as 1 version) for this changes #9465 and it turned out the build doesn't work because of old version nodejs.

Expected behavior

build docs preview v2

Actual behavior

fails with error:

Re-run Hugo with the flag --panicOnWarning to get a better error message.
Error: Error building site: POSTCSS: failed to transform "scss/main.css" (text/css): file:///usr/local/lib/node_modules/postcss-cli/node_modules/globby/index.js:27
        const extensionGlob = extensions?.length > 0 ? `.${extensions.length > 1 ? `{${extensions.join(',')}}` : extensions[0]}` : '';
                                         ^


SyntaxError: Unexpected token '.'
    at Loader.modul

Steps to reproduce the behavior

execute the command on main branch