amazon pay balance is not extracted

[saurabhgupta050890]

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• Summary
  Balance is not extracted from amazon pay transaction messages

Sample text: Payment of Rs 81.00 using Amazon Pay balance is successful at Amazon.in. Updated Balance: 125.00. For help/stmt: https://www.amazon.in/cstxn

Output:
{ account: { type: IAccountType.WALLET, name: 'amazon_pay', }, transactionAmount: '81.00', transactionType: 'debit', balance: '', }

Expected Output:
{ account: { type: IAccountType.WALLET, name: 'amazon_pay', }, transactionAmount: '81.00', transactionType: 'debit', balance: '125.00', }