HADOOP-16533. Upgrade jackson-databind to 2.9.9.3. (#1354). Contributed by Akira Ajisaka.

Reviewed-by: Siyao Meng <smeng@cloudera.com>

hadoop-project/pom.xml

@@ -70,7 +70,7 @@
     <!-- jackson versions -->
     <jackson.version>1.9.13</jackson.version>
     <jackson2.version>2.9.9</jackson2.version>
-    <jackson2.databind.version>2.9.9.2</jackson2.databind.version>
+    <jackson2.databind.version>2.9.9.3</jackson2.databind.version>
 
     <!-- httpcomponents versions -->
     <httpclient.version>4.5.6</httpclient.version>