New `update_users_role` mutation

In API versions 2025-01 and later, you can update a user's role through the API using the new update_users_role mutation!

mutation {
  update_users_role (user_ids: [12345, 54321], new_role: ADMIN) {
    updated_users {
      name
      is_admin
    }
    errors {
      user_id
      code
      message
    }
  }
}