the list of possible regions for cloud instances is not discoverable

[zackelan]

EdgeDB CLI Version: 3.0.0-dev (d763d26ead3fee56f53d4b4d4e72ed94b2e1c42c, master branch as of 2023-05-11)

from edgedb instance create --help:

        --region <region>
            For cloud instances: the region to create the instance in.

it will tell me if I get the region wrong:

> edgedb instance create --region test zackelan/test
This will create a new EdgeDB cloud instance with the following parameters:

Region: test
Server Version: 2.14
Does this look good? [y/n]
> y
edgedb error: "test" is not a valid EdgeDB cloud region

however, nothing in the help output will tell me what the valid regions are