update pom.xml to upgrade to light-4j 1.3.4

Author: stevehu

pom.xml

@@ -66,7 +66,7 @@
     <properties>
         <java.version>1.8</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <version.light-4j>1.3.3</version.light-4j>
+        <version.light-4j>1.3.4</version.light-4j>
         <version.jackson>2.8.7</version.jackson>
         <version.slf4j>1.7.25</version.slf4j>
         <version.jose4j>0.5.5</version.jose4j>