No compile in Debian 12

I try to compile in Debian 12 with 'cargo build' but I get this error:

```
error: failed to parse manifest at `/opt/linuxutils/retromultiinstaller/tmp/rtzx/Cargo.toml`

Caused by:
  failed to parse the `edition` key

Caused by:
  this version of Cargo is older than the `2024` edition, and only supports `2015`, `2018`, and `2021` editions.

```