🐛 Describe the bug

when I use Milvus, the memory can't update.
but use qdrant is ok.

// first
result = m.add("My name is Coco.", user_id="test", run_id="test"})
m.get_all(user_id="test", run_id="test")
{
"id": "4bff6247-0d78-4dd5-a858-0993717703cc",
"memory": "My Name is Coco",
"hash": "d926ccc72695c2c9ef4ce66d8d529318",
"metadata": null,
"created_at": "2024-10-08T23:50:28.198637-07:00",
"updated_at": null,
"user_id": "test",
"run_id": "test"
}

// then
result = m.add("My name is Joy.", user_id="test", run_id="test"})
m.get_all(user_id="test", run_id="test")
{
"id": "4bff6247-0d78-4dd5-a858-0993717703cc",
"memory": "My Name is Coco",
"hash": "d926ccc72695c2c9ef4ce66d8d529318",
"metadata": null,
"created_at": "2024-10-08T23:50:28.198637-07:00",
"updated_at": null,
"user_id": "test",
"run_id": "test"
},
{
"id": "586e592e-8356-4833-bbb8-662aa31974c3",
"memory": "Name is Joy",
"hash": "541656a62f8d356ada83821b24b31b77",
"metadata": null,
"created_at": "2024-10-08T23:43:12.749077-07:00",
"updated_at": null,
"user_id": "test",
"run_id": "test"
}