Changes to Check agent work items

the pending_tasks/items response's property type changed from no type to object for status 200

added the media type application/json for the response with the status 401

added the media type application/json for the response with the status 404

added the optional property pending_tasks/items/assigned_to to the response with the 200 status

added the optional property pending_tasks/items/created_at to the response with the 200 status

added the optional property pending_tasks/items/created_by to the response with the 200 status

added the optional property pending_tasks/items/description to the response with the 200 status

added the optional property pending_tasks/items/due_date to the response with the 200 status

added the optional property pending_tasks/items/estimated_hours to the response with the 200 status

added the optional property pending_tasks/items/id to the response with the 200 status

added the optional property pending_tasks/items/metadata to the response with the 200 status

added the optional property pending_tasks/items/priority to the response with the 200 status

added the optional property pending_tasks/items/status to the response with the 200 status

added the optional property pending_tasks/items/tags to the response with the 200 status

added the optional property pending_tasks/items/title to the response with the 200 status

added the optional property pending_tasks/items/updated_at to the response with the 200 status