Update pom.xml

Update core-api version 4.3.1 -> 4.3.4

Author: mtwomey

pom.xml

@@ -8,7 +8,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <core.api.version>4.3.1</core.api.version>
+        <core.api.version>4.3.4</core.api.version>
         <supply-library.version>1.0.20-SNAPSHOT</supply-library.version>
         <spring.version>4.2.5.RELEASE</spring.version>
         <jackson-version>2.7.3</jackson-version>