test_migrate_iptrunk: change in pp_interaction

to account to the change in the number of pp_interaction calls in migrate_iptrunk.

test/workflows/iptrunk/test_migrate_iptrunk.py

@@ -147,13 +147,14 @@ def test_migrate_iptrunk_success(
 
     result, process_stat, step_log = run_workflow("migrate_iptrunk", migrate_form_input)
 
-    for _ in range(5):
+    for _ in range(6):
         result, step_log = assert_pp_interaction_success(result, process_stat, step_log)
 
     assert_suspended(result)
     result, step_log = resume_workflow(process_stat, step_log, input_data=USER_CONFIRM_EMPTY_FORM)
 
-    result, step_log = assert_pp_interaction_success(result, process_stat, step_log)
+    for _ in range(4):
+        result, step_log = assert_pp_interaction_success(result, process_stat, step_log)
 
     assert_suspended(result)
     result, step_log = resume_workflow(process_stat, step_log, input_data=USER_CONFIRM_EMPTY_FORM)