style: fix psr-12 code style issues

Author: getsolaris

src/Attributes/Payment.php

@@ -67,7 +67,6 @@ class Payment extends TossPayments implements AttributeInterface
      */
     protected string $customerIdentityNumber;
 
-
     /**
      * @var int
      */
@@ -372,8 +371,7 @@ public function keyIn(
         ?string $customerEmail = null,
         ?string $customerName = null,
         ?Vbv $vbv = null
-    ): PromiseInterface|Response
-    {
+    ): PromiseInterface|Response {
         $parameters = [];
         if ($cardPassword) {
             $parameters['cardPassword'] = $cardPassword;

src/Objects/Vbv.php

@@ -25,4 +25,4 @@ public function __construct(string $cavv, string $xid, string $eci)
         $this->xid = $xid;
         $this->eci = $eci;
     }
-}
+}