[CC-678] Update sdk version. (#143)

Author: Ryouzanpaku

CHANGELOG.md

@@ -6,7 +6,7 @@ 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](https://github.com/unzerdev/java-sdk/compare/4.4.0..5.0.0)
+## [5.0.0](https://github.com/unzerdev/java-sdk/compare/4.4.0..5.0.0)
 
 Consists of internal refactorings and improvements.
 

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.unzer.payment</groupId>
     <artifactId>java-sdk</artifactId>
-    <version>4.4.0</version>
+    <version>5.0.0</version>
     <name>Unzer Java SDK</name>
     <description>Unzer SDK provides an easy way to use Unzer Payment API.</description>
     <url>https://docs.unzer.com/</url>