Permissions changes in public scheme postgres 15

[t-book]

We should check if this change in postgres 15 affects the geonode stack:

https://www.crunchydata.com/blog/be-ready-public-schema-changes-in-postgres-15

[giohappy]

Thanks for the heads up @t-book.

We should definetely start thinking to move geonode and data DB to its own user schema.