Update to the latest GPG plugin

Author: mhamer-bw

pom.xml

@@ -100,7 +100,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-gpg-plugin</artifactId>
-        <version>1.5</version>
+        <version>3.0.1</version>
         <executions>
           <execution>
             <id>sign-artifacts</id>