Save variant settings

curl --request POST \
  --url https://api.landerlab.dev/api/v2/workspaces/{workspaceId}/editors/{variantId}/saveSettings \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '{
  "settings": {}
}'

{
  "message": "<string>"
}