chore(deps): update dependency org.apache.maven.plugins:maven-gpg-plugin to v3.2.8

Author: renovate[bot]

pom.xml

@@ -40,7 +40,7 @@
     <plugin.version.war>2.4</plugin.version.war>
     <plugin.version.ear>2.9.1</plugin.version.ear>
     <plugin.version.rar>2.4</plugin.version.rar>
-    <plugin.version.gpg>3.2.7</plugin.version.gpg>
+    <plugin.version.gpg>3.2.8</plugin.version.gpg>
     <plugin.version.release>3.3.1</plugin.version.release>
     <plugin.version.publish>0.7.0</plugin.version.publish>