As described already here I am still facing a problem with updating Ghost manually.
This time I did a fresh installation to 2.19.1 and I have updated to 2.20.0 with the mentioned script.
This is how the data in the database still looks like:
That’s normal, there are no database migrations in 2.20. If the “About” screen in the admin area has the version that you are expecting then you’re updated
