Add migration logic to assist_pipeline (#115172)

script/hassfest/dependencies.py

@@ -156,6 +156,8 @@ IGNORE_VIOLATIONS = {
     ("websocket_api", "lovelace"),
     ("websocket_api", "shopping_list"),
     "logbook",
+    # Temporary needed for migration until 2024.10
+    ("conversation", "assist_pipeline"),
 }