migration is ok again (remains probleme of ram consuming > 4Go for users

composer.json

@@ -29,6 +29,7 @@
         "drupal/commerce_recurring": "^1.x-dev",
         "drupal/commerce_variation_cart_form": "^1.x-dev",
         "drupal/computed_field": "^2.0@beta",
+        "drupal/config_devel": "^1.7",
         "drupal/config_split": "^1.4",
         "drupal/console": "^1.0.2",
         "drupal/consumer_image_styles": "^3.0",
@@ -44,8 +45,9 @@
         "drupal/login_history": "^1.x-dev",
         "drupal/mailgun": "^1.x-dev",
         "drupal/mailsystem": "^4.1",
-        "drupal/migrate_plus": "^4.x-dev",
-        "drupal/migrate_tools": "^4.x-dev",
+        "drupal/migrate_devel": "2.x-dev@dev",
+        "drupal/migrate_plus": "5.x-dev@dev",
+        "drupal/migrate_tools": "5.x-dev@dev",
         "drupal/mimemail": "^1.x-dev",
         "drupal/modules_weight": "^1.8",
         "drupal/permissions_filter": "^1.1",