KNOX-2754: upgrade hadoop-common due to cve (#586)

diff --git a/pom.xml b/pom.xml
index fbecd08..a522b48 100644
--- a/pom.xml
+++ b/pom.xml
@@ -204,7 +204,7 @@
         <gson.version>2.8.9</gson.version>
         <groovy.version>3.0.7</groovy.version>
         <guava.version>28.2-jre</guava.version>
-        <hadoop.version>3.2.2</hadoop.version>
+        <hadoop.version>3.2.3</hadoop.version>
         <hamcrest.version>2.2</hamcrest.version>
         <hamcrest-json.version>0.2</hamcrest-json.version>
         <httpclient.version>4.5.13</httpclient.version>