Fix vulnerable packages + Transient errors in tests #81
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I think I finally found a problem that has been killing me for the past months, since tests we failing randomly, which seems to have to do with Promises not being flushed when using mock timers (which was the case in the ApplicationReviewWidget tests)
Some relevant info may be found here:
The solution involved migrating to the new implementation of fake timers from Jest 26 https://jestjs.io/blog/2020/05/05/jest-26#new-fake-timers
Regarding the audit issue, it was a problem with the react-dev-utils package (facebook/create-react-app#10411). Fixed by upgrading its version as well to 11.0.3