`auth-go` should be used instead of the archived `gotrue-go`

[daic0r]

Chore

Describe the chore

Places in the code that reference the archived gotrue-go package should be changed to reference the successor repo auth-go instead.

Additional context

See the README in the gotrue-go repo:

[echarrod]

Sorry didn't see the open MR, I raised a MR for this in #32 which was merged (I'm not a contributor though)