ZOOKEEPER-3734: upgrade jackson-databind to address CVE-2020-8840

Author: Enrico Olivelli <eolivelli@apache.org>

Reviewers: phunt@apache.org

Closes #1262 from eolivelli/fix/ZOOKEEPER-3734-jackson-again

Change-Id: I21df2c160f8dd9c2542c153e4aa53500b58e8144

pom.xml

@@ -327,7 +327,7 @@
     <commons-cli.version>1.2</commons-cli.version>
     <netty.version>4.1.45.Final</netty.version>
     <jetty.version>9.4.24.v20191120</jetty.version>
-    <jackson.version>2.9.10.2</jackson.version>
+    <jackson.version>2.9.10.3</jackson.version>
     <json.version>1.1.1</json.version>
     <jline.version>2.11</jline.version>
     <snappy.version>1.1.7</snappy.version>