Support modifying `Allow forking` option for resource_github_repository

[ganhuang]

Currently the the option Allow forking is not supported in the resource resource_github_repository. But it could be done via UI.

Affected Resource(s)

Please list the resources as a list, for example:

• resource_github_repository

[benj-fletch]

@ganhuang I don't believe that this is possible to be configured via the Github API for repositories? Do you know another way that this could be supported?

[deppy]

@benj-fletch https://developer.github.com/v3/repos/forks/#create-a-fork

[github-actions]

👋 Hey Friends, this issue has been automatically marked as stale because it has no recent activity. It will be closed if no further activity occurs. Please add the Status: Pinned label if you feel that this issue needs to remain open/active. Thank you for your contributions and help in keeping things tidy!

[kfcampbell]

We could use Terraform to create a fork, certainly, but read/update/delete operations still aren't supported as far as I can see.

[github-actions]

👋 Hey Friends, this issue has been automatically marked as stale because it has no recent activity. It will be closed if no further activity occurs. Please add the Status: Pinned label if you feel that this issue needs to remain open/active. Thank you for your contributions and help in keeping things tidy!

[timhirsh]

It looks like the ask in this issue was misunderstood (and the issue prematurely closed due to staleness). The allow_forking option is part of the "update repository" api here: https://docs.github.com/en/free-pro-team@latest/rest/repos/repos?apiVersion=2022-11-28#update-a-repository

@kfcampbell, #1033 appears to have implemented this but it was reverted shortly after.