Changes to Fetch a refund.

added the non-success response with the status 400

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 404

added the non-success response with the status 429

added the non-success response with the status 500

added the non-success response with the status 503

api operation id Refunds_Get2 removed and replaced with get-refunds-id

added the optional property allOf[subschema #2]/deposits/items/allOf[subschema #2]/deposit_id to the response with the 200 status