Merge pull request #54 from project-openubl/dependabot/maven/org.apache.maven.plugins-maven-gpg-plugin-3.0.1

Author: dependabot[bot]

pom.xml

@@ -341,7 +341,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.6</version>
+                        <version>3.0.1</version>
                         <executions>
                             <execution>
                                 <id>sign-artifacts</id>