Get Monthly Transactions

curl --request GET \
  --url https://server26-dot-royalti-project.uc.r.appspot.com/accounting/transactions/monthly \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": [
    {
      "month": "<string>",
      "year": 123,
      "totalAmount": 123,
      "transactionCount": 123
    }
  ]
}