Rename a variant file

curl --request POST \
  --url https://api.landerlab.dev/api/v2/workspaces/{workspaceId}/editors/{variantId}/renameFile \
  --header 'Content-Type: multipart/form-data' \
  --header 'X-API-Key: <api-key>' \
  --form 'filePath=<string>' \
  --form 'newFileName=<string>'

{
  "message": "<string>"
}