Increase timeout for update check (#1726)
Increase timeout for update check (#1726)

* Increase timeout for update check from 0.1 seconds to 3 seconds
* Closes #1678 
ajvpot/CTFd,isislab/CTFd,ajvpot/CTFd,ajvpot/CTFd,CTFd/CTFd,CTFd/CTFd,isislab/CTFd,isislab/CTFd,CTFd/CTFd,isislab/CTFd,ajvpot/CTFd,CTFd/CTFd