Expand node support

[chawes13]

The purpose of this PR is to expand node support to allow for using the latest version of the AWS Connect library (>=12.0.0).

I don't think this is a breaking change, since @size-limit/file@3.0.0 is only compatible with node >=10.0.0. Let me know if I should take this as an opportunity to bump to 4 or if you want to keep support for 8

Author Checklist

• [x] ~Add unit test(s)~
• [x] Update version in package.json
• [x] ~Update documentation (if necessary)~
• [x] ~Add story to storybook (if necessary)~
• [x] Assign dev reviewer

[dpikt]

Let's keep "support" for Node 8. Let's also add ^12 as an explicit version allowance to make this more future-proof.

[chawes13]

@dpikt Done!

[chawes13]

@dpikt I had to update tests to account for the sort algorithm changing in 11

[chawes13]

Latest Travis report: https://travis-ci.org/github/LaunchPadLab/lp-components/builds/706629559