Is your feature request related to a problem? Please describe.
Forgejo is a hard fork of Gitea due to recent license changes.

Describe the solution you'd like
It should be possible to configure a forgejo instance as releaser, just like every other Git service currently supported by JReleaser.

Describe alternatives you've considered
None.

Additional context
There's no guarantee that Forgejo will be compatible with Gitea in the future.