Copier update and update notebook docs

[znicholls]

No description provided.

[znicholls]

@lewisjared @mikapfl FYI. This is trivial so I will just merge once I figure out what is going on with pre-commit CI

[mikapfl]

I think pre-commit CI doesn't have network access at runtime, so the poetry lock which updates dependencies probably can't work. Unless I misunderstand something.

[znicholls]

I think pre-commit CI doesn't have network access at runtime, so the poetry lock which updates dependencies probably can't work. Unless I misunderstand something.

Clever, thanks!