[CC-803] Increase sdk version (#188)

Author: Ryouzanpaku

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres
 to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
-## UNRELEASED
+## [3.6.0](https://github.com/unzerdev/php-sdk/compare/3.5.0..3.6.0)
 
 Twint payment method is added to SDK.
 

src/Unzer.php

@@ -53,7 +53,7 @@ class Unzer implements
     public const BASE_URL = 'api.unzer.com';
     public const API_VERSION = 'v1';
     public const SDK_TYPE = 'UnzerPHP';
-    public const SDK_VERSION = '3.5.0';
+    public const SDK_VERSION = '3.6.0';
 
     /** @var string $key */
     private $key;