Put singing plugin under seperate profile.

gpt4all-bindings/java/pom.xml

@@ -163,26 +163,7 @@
                     </execution>
                 </executions>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-gpg-plugin</artifactId>
-                <version>1.5</version>
-                <executions>
-                    <execution>
-                        <id>sign-artifacts</id>
-                        <phase>verify</phase>
-                        <goals>
-                            <goal>sign</goal>
-                        </goals>
-                        <!--
-                        <configuration>
-                            <keyname>${gpg.keyname}</keyname>
-                            <passphraseServerId>${gpg.keyname}</passphraseServerId>
-                        </configuration>
-                        -->
-                    </execution>
-                </executions>
-            </plugin>
+
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-assembly-plugin</artifactId>
@@ -212,5 +193,29 @@
 
     </build>
 
-
+    <profiles>
+        <profile>
+        <id>signing-profile</id>
+        <!-- activation conditions here, if any -->
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>3.1.0</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
 </project>