Bump CI to agda-2.8 and stdlib-2.3

[andreasabel]

No description provided.

[JacquesCarette]

Thanks - I've been meaning to do this, but got stuck on Wen's setup-agda not having caught up.

[JacquesCarette]

looks good to me, but my YAML-fu is weak.

[andreasabel]

Thanks - I've been meaning to do this, but got stuck on Wen's setup-agda not having caught up.

Yes, this is unfortunately a problem.
I made a simple setup action that works for 2.8.0.
It is not feature complete with Wen's action---just a simple composite action I wrote today.
The amount of features and sophistication on Wen's action seems unfortunately also the reason why it is stuck---just too much effort to maintain.

[andreasabel]

Works!

[JacquesCarette]

Thanks - you've now unblocked me on several PRs. NB: I'm not a huge fan of self-merges...

[andreasabel]

Ah, I took your approving review as green light...

But yes, good to be able to move on with Agda 2.8.0...