GDMD picking up wrong GDC

[WebFreak001]

In GitHub Actions I installed `sudo apt install gdc-12` now 
inside Ubuntu 22.04, however `gdc` still seemed to be a small 
extra package that's symlinking gdc to gdc-11.

Now gdmd is picking up GDC 11 instead of GDC 12, causing issues 
in the build.

Is there a way to tell gdmd to use GDC 12? Right now I hacked 
around this by doing

```
sudo rm /usr/bin/gdc
sudo ln -s /usr/bin/gdc-12 /usr/bin/gdc
```

but if this wasn't a CI, I wouldn't really wanna do this.

Would it be possible to provide extra gdmd scripts like gdmd-12 
that pick gdc-12 on Ubuntu?

see commit 
https://github.com/dlang-community/libdparse/commit/03099519982c10b9d7831771bcb744f06b727400

Since this is manual DMD invocation, and not dub, I can't just 
specify gdc-12 as compiler.