Update jackson version

pom.xml

@@ -17,6 +17,7 @@
         <failOnDependencyWarning>true</failOnDependencyWarning>
         <project.build.sourceEncoding>iso-8859-1</project.build.sourceEncoding>
         <cxf.version>3.2.6</cxf.version>
+        <jackson.version>2.9.8</jackson.version>
     </properties>
 
     <repositories>
@@ -116,17 +117,17 @@
             <dependency>
                 <groupId>com.fasterxml.jackson.core</groupId>
                 <artifactId>jackson-core</artifactId>
-                <version>2.9.6</version>
+                <version>${jackson.version}</version>
             </dependency>
             <dependency>
                 <groupId>com.fasterxml.jackson.core</groupId>
                 <artifactId>jackson-databind</artifactId>
-                <version>2.9.6</version>
+                <version>${jackson.version}</version>
             </dependency>
             <dependency>
                 <groupId>com.fasterxml.jackson.core</groupId>
                 <artifactId>jackson-annotations</artifactId>
-                <version>2.9.0</version>
+                <version>${jackson.version}</version>
             </dependency>
             <dependency>
                 <groupId>com.google.guava</groupId>