Update required Node.js version to at least 12

[loreanvictor]

Currently on the package it is mentioned that it is compatible with node>=10. However, just had an issue with a coworker running node v10.12.0 which couldn't run an internal CLI tool based on ink, and resolved it by simply upgrading node. This was the issue that got resolved:

.../node_modules/yoga-layout-prebuilt/yoga-layout/build/Release/nbind.js:53
        throw ex;
        ^

Error: Cannot find module 'fs/promises'
    at Function.Module._resolveFilename

Perhaps the engine requirement should be bumped to node>=10.24?

[vadimdemedes]

Good catch! Any version requirements changes should probably be in major release, so I'll keep this open for v4.

[vadimdemedes]

Fixed in #543.