Updates an invoice by modifying fields, clearing fields, or both.
curl https://connect.squareupsandbox.com/v2/invoices/{invoice_id} \
-X PUT \
-H 'Square-Version: 2020-12-16' \
-H 'Authorization: Bearer ACCESS_TOKEN' \
-H 'Content-Type: application/json' \
-d '{}'// No response received yet.