GPG fix try

Author: krystian-panek-vmltech

core/pom.xml

@@ -371,6 +371,7 @@ DynamicImport-Package: *
                         <executions>
                             <execution>
                                 <id>attach-sources</id>
+                                <phase>package</phase>
                                 <goals>
                                     <goal>jar</goal>
                                 </goals>
@@ -388,6 +389,7 @@ DynamicImport-Package: *
                         <executions>
                             <execution>
                                 <id>attach-javadocs</id>
+                                <phase>package</phase>
                                 <goals>
                                     <goal>jar</goal>
                                 </goals>