Update Column

Updates a specific column's definition within an audience. Supported fields: name, isFrozen, and isHidden. Only fields present in the request body are modified. Use this endpoint to rename a column or toggle its display state. Returns 200 with the updated column resource. Returns 400 if the update is invalid or the column is not editable (isEditable: false). Returns 404 if the audienceId or columnId does not exist.