import requests

url = "https://platform.ankra.app/api/v1/org/clusters/imported/{cluster_id}/variables/{variable_name}"

payload = { "value": "<string>" }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.put(url, json=payload, headers=headers)

print(response.text)

{
  "variable": {
    "id": "<string>",
    "cluster_id": "<string>",
    "organisation_id": "<string>",
    "name": "<string>",
    "value": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "updated_at": "2023-11-07T05:31:56Z",
    "description": "<string>"
  }
}