IAM Username is now optional,
- Action will use the username of the aws credentials being set. Otherwise you can set the username of the user you want to rotate. (@marcohutzsch1234 )
GITHUB_TOKEN is replaced by PERSONAL_ACCESS_TOKEN
GITHUB_TOKEN only has access to the repository the action is being run in. Using a PERSONAL_ACCESS_TOKEN will give the action the ability to update repositories other than the one it is being run in. (@marcohutzsch1234 )