Refresh yarn.lock (#3065)
Refresh yarn.lock (#3065)

Performed via:
* `./vagrant/setup.sh` (to ensure latest node/yarn version)
* `rm -rf node_modules/ yarn.lock`
* `yarn install`
* commit resultant updated `yarn.lock`
edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,edmorley/treeherder,KWierso/treeherder,edmorley/treeherder,KWierso/treeherder,KWierso/treeherder