CI: Correct etcd and ncurses package names for Ubuntu 24.04

[mattlord]

Description

In Ubuntu 24.04 — which is currently what is used for ubuntu-latest in GitHub Actions — the etcd package was split into etcd-client and etcd-server and it includes libncurses6.

Note

This is not needed today (the driver for opening this seems to have been fixed in Actions) — so there must be package helpers in 24.04 that help bridge the gap and cover the transition, but these may go away in 26.04. Since these are the correct package names, there's no reason not to make the change.

Related Issue(s)

Checklist

• "Backport to:" labels have been added if this change should be back-ported to release branches
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• Documentation was added or is not required

[vitess-bot]

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[GrahamCampbell]

Might it be prudent to pin to ubuntu-22.04, rather than latest (in particular for the versions older than Vitess 22), so things don't break from under us?

[mattlord]

Might it be prudent to pin to ubuntu-22.04, rather than latest (in particular for the versions older than Vitess 22), so things don't break from under us?

Yeah, it looks like we'll probably need to do that.

[GrahamCampbell]

Yeah, it looks like we'll probably need to do that.

Or at least, pin to 24.04, so the next upgrade to 26.04 will be explicit (and backport optional).