Update the version number of version 3.39.0 for the next development cycle.
FossilOrigin-Name: 9542e9bebbd25b20228fa2366b76d55845a40f12fdc4bbd077d1cb48e32b8cf2
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drh committed
fc4fe5a83776eed1013cee2c57db9dfad685d983
Parent: 19ae01b