update jackson version

Author: wangqifox

pom.xml

@@ -33,7 +33,7 @@
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>
             <artifactId>jackson-databind</artifactId>
-            <version>2.9.8</version>
+            <version>2.9.9</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>