Update project thread

curl --request POST \
  --url https://api.wacht.dev/ai/actor-project-threads/{thread_id}/update \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "title": "<string>",
  "agent_id": "<string>",
  "system_instructions": "<string>"
}
'

{
  "id": "<string>",
  "deployment_id": "<string>",
  "actor_id": "<string>",
  "project_id": "<string>",
  "title": "<string>",
  "thread_kind": "<string>",
  "thread_visibility": "<string>",
  "thread_purpose": "<string>",
  "responsibility": "<string>",
  "reusable": true,
  "accepts_assignments": true,
  "capability_tags": [
    "<string>"
  ],
  "status": "<string>",
  "system_instructions": "<string>",
  "last_activity_at": "2023-11-07T05:31:56Z",
  "completed_at": "2023-11-07T05:31:56Z",
  "execution_state": {},
  "next_event_sequence": 123,
  "metadata": {},
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "archived_at": "2023-11-07T05:31:56Z"
}