ORC-2122: Upgrade spark.jackson.version to 2.21.0 in bench module

Author: dongjoon-hyun

java/bench/spark/pom.xml

@@ -37,7 +37,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 
     <!-- Spark Jackson version may not be same as ORC -->
-    <spark.jackson.version>2.18.2</spark.jackson.version>
+    <spark.jackson.version>2.21.0</spark.jackson.version>
   </properties>
 
   <dependencies>