Update github actions to cache yarn (#2113)
Update github actions to cache yarn (#2113)

* Update github actions to cache yarn

Right now the yarn install time takes up over half of our build time, this will probably cut that down dramatically. I copy pasted it directly from their examples: https://github.com/actions/cache/blob/main/examples.md#node---yarn

* wrecked by prettier

Co-authored-by: Matt Fedderly <914bd4a5f7f1c5834fea363cdcdb0d1726e6c25e@palantir.com>
Turfjs/turf,dpmcmlxxvi/turf,dpmcmlxxvi/turf,Turfjs/turf,Turfjs/turf,dpmcmlxxvi/turf