nvidia-cudnn for cuda 11.8

[M. Zhou]

I thought about that but do we have enough time to make it migrate?
I added some significant difference in the postinst script compared to the current version in testing.
I don't know whether the release manager will let it pass.

On Thu, 2023-04-27 at 09:26 +0200, Andreas Beckmann wrote:
> Hi lumin,
> 
> don't you want to update nvidia-cudnn in sid for cuda 11.8?
> 
> 
> Andreas