Update GPG plugin config

Author: Caesar Ralf

pom.xml

@@ -188,6 +188,26 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-gpg-plugin</artifactId>
+        <version>3.0.1</version>
+        <executions>
+          <execution>
+            <id>sign-artifacts</id>
+            <goals>
+              <goal>sign</goal>
+            </goals>
+            <phase>verify</phase>
+            <configuration>
+              <gpgArguments>
+                <arg>--pinentry-mode</arg>
+                <arg>loopback</arg>
+              </gpgArguments>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>
 </project>