Downgrade the *aws-sdk* package to prevent app crashing

*hopefully*

* As I stated in commit summary in https://github.com/OpenUserJs/OpenUserJS.org/commit/b486122264e74d501b2f822ccbef7daeaba78675 there is no way to know for sure if these updates will work flawlessly on production since it's "reals3" instead of fakes3
Merge pull request #395 from Martii/downgradeAwsSDK

Downgrade the *aws-sdk* package to prevent app crashing

Auto-merge