"Confidential Client" is now mandatory in Gitea

[kousu]

As of go-gitea/gitea#21316

[kousu]

When setting up an OAuth app this is checked by default, however not if you set up an OAuth app with the Gitea API.

Without this checked,

every attempt to log in ends in

but with it checked,

Drone works as expected.

[kousu]

This needs updated screenshots too, but I'm busy and frankly, you're getting paid to work on Drone so you can do it.

[tphoney]

thanks for the update @kousu