Update agent

curl -X PUT 'https://backend.omnidim.io/api/v1/agents/{agent_id}' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{
  "name": "Customer Support Agent",
  "welcome_message": "Hello! How can I help you today?",
  "context_breakdown": [
    {
      "title": "Purpose",
      "body": "This agent helps customers with product inquiries and support issues.",
      "is_enabled": true
    }
  ],
  "transcriber": {
    "provider": "deepgram_stream",
    "model": "nova-3",
    "silence_timeout_ms": 400
  },
  "model": {
    "model": "gpt-4o-mini",
    "temperature": 0.7
  },
  "voice": {
    "provider": "eleven_labs",
    "voice_id": "JBFqnCBsd6RMkjVDRZzb"
  },
  "web_search": {
    "provider": "DuckDuckGo"
  },
  "post_call_actions": {
    "email": {
      "recipients": [
        "support@example.com"
      ],
      "extracted_variables": [
        {
          "key": "customer_issue",
          "prompt": "Identify the main issue the customer is experiencing."
        }
      ]
    },
    "webhook": {
      "url": "https://your-webhook-endpoint.com/omnidim-callback",
      "extracted_variables": [
        {
          "key": "customer_issue",
          "prompt": "Identify the main issue the customer is experiencing."
        }
      ]
    }
  },
  "transfer": {
    "transfer_options": [
      {
        "number": "+15551234567",
        "type": "static",
        "transfer_condition": "Transfer if the customer asks to speak with a human.",
        "transfer_message": "Please hold while I connect you to one of our agents."
      }
    ]
  },
  "end_call": {
    "condition": "End the call once the customer'\''s issue is resolved.",
    "message": "Thank you for contacting us. Have a great day!"
  },
  "background_track": {
    "volume": 0.2
  },
  "languages": [
    "English",
    "Hindi"
  ]
}'