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The part of this PR fixing the role ID looks good, but I'm not sure about the other changes.

According to the API docs the base role should be set to "none". This is the fix applied in #2968 which this PR appears to be undoing?

Yeah, I see those docs, but running the tests on GHEC gives me a 422 Validation error if I'm passing in "none".

When running a manual curl with base_role: "none" I get this response:

{
	"message": "Invalid request.\n\nInvalid property /base_role: `none` is not a possible value. Must be one of the following: read, triage, write, maintain, admin.",
	"documentation_url": "https://docs.github.com/rest/orgs/organization-roles#create-a-custom-organization-role",
	"status": "422"
}