Bump org.apache.maven.plugins:maven-gpg-plugin from 3.2.0 to 3.2.1 (#533

)

pom.xml

@@ -111,7 +111,7 @@
     <maven-deploy-plugin.version>3.1.1</maven-deploy-plugin.version>
     <maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version>
     <maven-enforcer-plugin.version>3.4.1</maven-enforcer-plugin.version>
-    <maven-gpg-plugin.version>3.2.0</maven-gpg-plugin.version>
+    <maven-gpg-plugin.version>3.2.1</maven-gpg-plugin.version>
     <maven-help-plugin.version>3.4.0</maven-help-plugin.version>
     <maven-install-plugin.version>3.1.1</maven-install-plugin.version>
     <maven-jar-plugin.version>3.3.0</maven-jar-plugin.version>