Update an evaluation case

curl --request PATCH \
  --url https://api-sandbox.featherhq.com/v1/knowledge-base/evals/cases/{case_id} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "question": "<string>",
  "expected_answer": "<string>",
  "success_criteria": [
    "<string>"
  ]
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "suite_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "organization_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "question": "<string>",
  "expected_answer": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "success_criteria": [
    "<string>"
  ]
}