Hi @Christel_Doudet,
You could use axios directly through a Function node when setting the NODE_FUNCTION_ALLOW_EXTERNAL=axios variable (see Environment Variables | Docs for a full list of all variables). @RicardoE105 posted an example in Upload File: Multipart-formdata - #8 by RicardoE105.
You could also force the HTTP Request node to use the old requests library by setting N8N_USE_DEPRECATED_REQUEST_LIB=true to see if this works with your file.