new version required & add ply to path

stack/erp5/buildout-py3.cfg

@@ -35,6 +35,7 @@ eggs =
     mysqlclient
     Products.ZSQLMethods
     Products.DCWorkflow
+    ply
 
 Products.DCWorkflow-patches = ${:_profile_base_location_}/../../component/egg-patch/Products.DCWorkflow/workflow_method.patch#e44faaf9953eee21124c572039ffecf1
 Products.DCWorkflow-patch-options = -p1
@@ -212,3 +213,5 @@ lxml = 4.4.3
 xml_marshaller = 1.0.2
 mysqlclient = 2.0.1
 Products.ZSQLMethods = 3.0.10
+Products.ExternalMethod = 4.4
+Products.StandardCacheManagers = 4.0.3
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