MINOR: upgrade jackson-databind to 2.9.9.3

Some downstream components are hitting the following regression in 2.9.9.2
FasterXML/jackson-databind#2395

pom.xml

@@ -57,7 +57,7 @@
         <!-- The following property should default to jackson.version unless there's an independent hotfix version.
         If so, then once the next version of jackson is released, it should get reset to the default -->
         <!-- <jackson-databind.version>${jackson.version}</jackson-databind.version> -->
-        <jackson-databind.version>2.9.9.2</jackson-databind.version>
+        <jackson-databind.version>2.9.9.3</jackson-databind.version>
 
         <jacoco-maven-plugin.version>0.7.9</jacoco-maven-plugin.version>
         <junit.version>4.12</junit.version>