docs(add) Dedibox FTP-backup curl note (#5907)

* Update use-dedibackup-ftp-backup.mdx

Added note regarding curls default behavior in newer versions, to ignore IP given from server for passive connection.

* Update pages/dedibox/how-to/use-dedibackup-ftp-backup.mdx

---------

Co-authored-by: Benedikt Rollik <brollik@scaleway.com>

Author: DocRuben

pages/dedibox/how-to/use-dedibackup-ftp-backup.mdx

@@ -153,4 +153,9 @@ curl -T "path_to_your_file.7z" -u "sd-XXXXX:your_password" ftp://dedibackup-dc3.
 ```
 <Message type="tip">
   Replace `dedibackup-dc3` with the actual backup location (`-dc2`, `-dc3`, etc.), as specified in your Dedibox console.
-</Message>
+</Message>
+
+<Message type="note">
+  Starting with **curl 7.74.0**, the default behavior in FTP passive mode is to ignore the IP address returned by the server. To make curl use the server’s `PASV IP` (the previous behavior), use the option `--no-ftp-skip-pasv-ip`.
+</Message>
+