LIbadalang Tools report wrong version.

The 25.0.0 version of - for example - `gnatpp` - reports itself as
```
$ gnatpp --version

Info: AdaCore provides a new formatter GNATformat, currently in beta. This will supersede GNATpp when leaving the beta program.
-----

GNATPP Pro dev
Copyright (C) 2004-unknown, AdaCore.
```

That should read
```
GNATPP Pro 25.0.0
Copyright (C) 2004-2024, AdaCore.
```