Update uuid 2.x -> 3.x

[lencioni]

@airbnb/webinfra

[tstirrat15]

@ljharb this has the potential to result in a broken build of enzyme.

The 3.0.0 version of uuid doesn't support the uuid/v4 import style, and will throw an error on import. I ran into this problem in my own project. 3.1.0 doesn't experience this problem.

I'm not sure how npm determines which version of a package to pull when resolving dependencies beyond the first layer - this may be to blame?

[lencioni]

Ah my bad. It looks like that was added in 3.0.1. I'll open a PR to fix.

Update: PR is here: #1001

[ljharb]

Thanks - it would only result in 3.0.0 if something else in the dep graph pinned to that version, but it's a good idea to fix it asap :-)