Bump hadoop-common from 3.2.1 to 3.2.4 in /examples

Bumps hadoop-common from 3.2.1 to 3.2.4.


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pr-link: Alluxio#16830
change-id: cid-c9e528db52ed4d3bf78ca8ea210d525150454ca4

dora/examples/pom.xml

@@ -27,7 +27,7 @@
     <!-- run properly from sub-project directories -->
     <build.path>${project.parent.parent.basedir}/build</build.path>
     <failIfNoTests>false</failIfNoTests>
-    <hadoop.version>3.2.1</hadoop.version>
+    <hadoop.version>3.2.4</hadoop.version>
   </properties>
 
   <dependencies>