use newest sdk version

Author: rgrassian-split

CHANGES.txt

@@ -1,4 +1,4 @@
 1.0.0
 - First release. Up to date with java sdk v0.1.0
 1.1.0
-- Up tp date with spec v0.5.0 and java sdk v0.3.0
+- Up tp date with spec v0.5.0 and java sdk v0.3.1

pom.xml

@@ -75,7 +75,7 @@
     <dependency>
       <groupId>dev.openfeature</groupId>
       <artifactId>sdk</artifactId>
-      <version>0.3.0</version>
+      <version>0.3.1</version>
     </dependency>
   </dependencies>