Temporary hotfix – set out of stock to 4 days ago, not 2

@kenleytomlin Do not merge

Have to deploy this temporary hotfix. For some reason product/variant "updated_at" timestamps are NOT being updated. So the whole site just went blank of products.

Deploying this temporary fix which sets expired to 4.days.ago, not 2, for our demo tomorrow until we resolve the issue. Why is everything going wrong when your internet is out?! ;)