username:password
Authorization: Basic *****************
{
"due_date": "2019-08-24T14:15:22Z"
}
curl --location --request POST '/repos///issues//deadline' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic Og==' \
--data-raw '{
"due_date": "2019-08-24T14:15:22Z"
}'
{
"due_date": "2019-08-24T14:15:22Z"
}