Merge pull request #1241 from PrestaShopCorp/fix/http-client-getbody-ps6

Fix HttpClient getBody PS1.6

src/PayPal/Payment/Refund/CommandHandler/RefundPayPalCaptureCommandHandler.php

@@ -94,7 +94,7 @@ public function handle(RefundPayPalCaptureCommand $command)
                 ),
         ]);
 
-        $refund = json_decode($response->getBody()->getContents(), true);
+        $refund = json_decode($response->getBody(), true);
         $this->eventDispatcher->dispatch(
             new PayPalCaptureRefundedEvent(
                 $refund['id'],