Update Voice

curl --request POST \
  --url https://api.vocode.dev/v1/voices/update \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "type": "voice_azure",
  "voice_name": "<string>",
  "pitch": 123,
  "rate": 123
}'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "type": "voice_azure",
  "voice_name": "<string>",
  "pitch": 0,
  "rate": 15
}