Unbound Report Migration hotfix

[CJ]

I see this was added to the release announcement but it's unclear as to what the actual issue is.  My Unbound reports seem to be working correctly, but I didn't check them until a day or two after the upgrade from 23.1.11_1 to 23.7.4

A hotfix release was issued as 23.1.11_2:

o unbound: enable migration of Unbound DNS reports