Release nerdctl v2.3.1 with the GA release of containerd v2.3

> Thanks, but you had to bump up containerd
> https://github.com/containerd/nerdctl/blob/0b388bb31d7877ab9b73155e0fa387843d0954ea/Dockerfile#L20 

 _Originally posted by @AkihiroSuda in [#4868](https://github.com/containerd/nerdctl/issues/4868#issuecomment-4379131637)_