MTA-3902: Updating credentials for payment accounts

Author: rliukshyn

dev/tests/functional/etc/repository_replacer_payments.xml

@@ -15,7 +15,7 @@
         </dataset>
     </repository>
 
-    <repository class="Magento\Authorizenet\Test\Repository\SandboxCustomer">
+    <repository class="Magento\Authorizenet\Test\Repository\AuthorizenetSandboxCustomer">
         <dataset name="sandbox_fraud_hold_review">
             <field name="login_id" xsi:type="string">AUTHORIZENET_LOGIN_ID</field>
             <field name="password" xsi:type="string">AUTHORIZENET_PASSWORD</field>