I'm not familiar yet with the automated CI builds, I will go through the process in the next few days.
If I understood correctly, you guys have always used that output for the windows releases so far (until Geany 2.0).
In fact, it's the opposite, releases have been made manually as described here https://wiki.geany.org/howtos/win32/msys2. But I think Enrico mentioned he has some work-in-progress patch for making releases using CI and I thought it might be a good idea because those builds possibly get more testing from users and there is less space for human error.
If so it may be better to stick with that for now as I get to know better your build environments, in particular if you want to release Geany 2.1 soon.
We have been wanting to release Geany 2.1 soon for about one year now. No stress :-)