thanks for the reply. This is exactly the model of what I'm looking for, without being what I'm looking for.
Isn't that link valid for minor updates only? I'd like to switch from 1.32 to 1.34. I had already tried the method you suggested, but it resulted in remaining at 1.32.
I'm looking for something capable of upgrading mediawiki (and, why not, upgrading all the stack) and allowing me to focus only on modules/extensions that might have affected by upgrading issues.
Anyway, as far as I can understand, you're saying that there's no such a tool.