#5041 Update packages

build.xml

@@ -119,7 +119,7 @@
     <!-- ============================================  -->
     <target name="prepare">
         <echo msg="Prepage: installing necessary components" />
-        <exec command="npm install" dir="${project.basedir}" checkreturn="true" />
+        <exec command="yarn" dir="${project.basedir}" checkreturn="true" />
         <exec command="${php} ${composer} install" dir="${project.basedir}" checkreturn="true" />
         <exec command="${php} ${composer} install" dir="${project.basedir}/tests" checkreturn="true" />
     </target>