Update dependency org.apache.maven.plugins:maven-gpg-plugin to v3 (#349)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -164,7 +164,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-gpg-plugin</artifactId>
-				<version>1.6</version>
+				<version>3.2.7</version>
 				<executions>
 					<execution>
 						<id>sign-artifacts</id>