If you ever run into a problem with an app you published in Apple's App Store, and want to update it as fast as possible, you can ask the Apple review team for an "expedited review" explaining the problem.
How to ask Apple for an "expedited" review?
In AppStore Connect, select “Support and Contact”. From the list of topics that follows, select "App Review", then "Request Expedited Review", and fill out the form.
While your request does not give you any guarantee, in many cases the request is taken into account and your update may indeed be approved faster.