chore(project): update Node.js version to v12 LTS

[vpicone]

Motivation

Node 12 is the LTS version, we'll need to update eventually. This brings us in line with the theme/website minimum node versions as well.

Changelog

• update all workflows to use node 12,
• update min version in package.json to reflect 12
• update scss-to-json v2 which removes its dependency on node-sass v3 which is node 12 incompatible.

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[joshblack]

Yeesh, no idea what's going on with node-sass. If you end up needing to force one version that's totally fair, can place it in /package.json under resolutions with the other stuff 👍

[vpicone]

@joshblack yeah not sure :/ it looks like we have a node-sass@3 in our yarn lock and offline mirrors for some reason not sure if it’s trying to build that?

[joshblack]

@vpicone when looking at the error messages locally it seems like scss-to-json was the dependency causing issues and it had a nested node-sass in its node_modules, maybe it's something with that?

Can always try pinning it to the version we want to use too to see if that helps address it.

[vpicone]

@joshblack ah nice that was it. Updating scss-to-json removed the dependency on node-sass v3.

[tw15egan]

Not seeing any issues after updating 👍 ✅