Upgrade maven-gpg-plugin to 3.2.7

Author: johngmyers

CHANGES

@@ -5,6 +5,7 @@ Platform 3.29
   - maven-surefire-plugin to 3.5.2 (was 2.22.2)
   - duplicate-finder-maven-plugin to 2.0.1 (was 1.5.0)
   - maven-site-plugin to 3.21.0 (was 3.9.1)
+  - maven-gpg-plugin to 3.2.7 (was 1.6)
 
 Platform 3.28
 

library/pom.xml

@@ -577,7 +577,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-gpg-plugin</artifactId>
-                    <version>1.6</version>
+                    <version>3.2.7</version>
                     <configuration>
                         <useAgent>true</useAgent>
                     </configuration>