Why do we need this ?

Currently, to access GitHub's resources the only supported authentication method is by using Personal Authentication Tokens (classic). Some organizations do not allow PATs to access organization resources, only fine grained tokens. Allowing fine grained tokens would make it possible for organizations that have this setting to utilize Middleware.

Acceptance Criteria

Being able to use a fine grained tokens in the github integration.

Further Comments / References

I think this would be an easy change because the requests to the api would be identical. Only the code that checks the token length/permissions that would need to change.