gpg maven upgrade (#132)

pom.xml

@@ -3,11 +3,11 @@
 	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
-	
+
 	<groupId>com.redislabs</groupId>
 	<artifactId>jredisgraph</artifactId>
 	<version>2.5.1-SNAPSHOT</version>
-	
+
 	<name>JRedisGraph</name>
 	<description>Official client for Redis-Graph</description>
 	<url>https://redisgraph.io</url>
@@ -171,7 +171,13 @@
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-gpg-plugin</artifactId>
-						<version>1.5</version>
+						<version>3.0.1</version>
+						<configuration>
+							<gpgArguments>
+								<arg>--pinentry-mode</arg>
+								<arg>loopback</arg>
+							</gpgArguments>
+						</configuration>
 						<executions>
 							<execution>
 								<id>sign-artifacts</id>
@@ -182,6 +188,7 @@
 							</execution>
 						</executions>
 					</plugin>
+
 					<plugin>
 						<groupId>org.apache.maven.plugins</groupId>
 						<artifactId>maven-pmd-plugin</artifactId>