Upgrade maven-shade-plugin to 3.2.4

Change-Id: Iba47e9304b6f20e8aa4855378bc86063919bb909
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>
diff --git a/pom.xml b/pom.xml
index a0f6d77..7cc21fad 100644
--- a/pom.xml
+++ b/pom.xml
@@ -234,7 +234,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-shade-plugin</artifactId>
-          <version>3.2.3</version>
+          <version>3.2.4</version>
         </plugin>
 
         <plugin>