[GitHub Actions] use Ubuntu 24.04 for all workflows

[foolip]

Per a GitHub email, Ubuntu 20.04 will be fully unsupported by April 1,
2025 and there are brownout periods starting March 4.

Make all workflows use 24.04 instead.
Fixes #43361.

---

Checklist to confirm still working before landing this:

• check-workflow-run.yml
• docker.yml
• documentation.yml
• epochs.yml
• interfaces.yml
• manifest.yml
• regen_certs.yml
• update-wasm-tests.yml
• wpt_fyi_notify.yml

[wpt-pr-bot]

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[foolip]

I've dry run everything that I could here. The setup for Safari runs involves multiple workflows and I don't know how to dry run it end-to-end. But check-workflow-run.yml and wpt_fyi_notify.yml both looks fairly simple, as in they don't really depend much on the underlying OS, except for Python being there.

@gsnedders would it be OK to land this and monitor the following Safari runs, or are there more things that can be dry run here?

[past]

Per #43361 (comment) there are also .azure-pipelines.yml and fyi_hook.yml.

[foolip]

@past those are for Azure Pipelines and the email I got was only for GitHub Actions. But I can update the Azure Pipelines images in a separate PR, it's likely Azure Pipelines will also retire 20.04 soonish.

[past]

Right, I assume that they all use the same data center infra under the hood.

[gsnedders]

I've dry run everything that I could here. The setup for Safari runs involves multiple workflows and I don't know how to dry run it end-to-end. But check-workflow-run.yml and wpt_fyi_notify.yml both looks fairly simple, as in they don't really depend much on the underlying OS, except for Python being there.

@gsnedders would it be OK to land this and monitor the following Safari runs, or are there more things that can be dry run here?

Everything being run on Ubuntu is very boring, and I'd be very surprised if it broke; I'd just change it.

(I did debate doing this a while back, but it seemed like unnecessary risk given many of these only run on schedules.)

[foolip]

Right, I assume that they all use the same data center infra under the hood.

At least a few years ago it was clear that at least macOS agents were separate pools. But it would make a lot of sense if Azure Pipelines and GitHub Actions converge, if they haven't fully already.

I'll send that other PR.

[foolip]

#50676

[mukilan]

@foolip The PR description says this fixes #43361, but I don't see the Dockerfile being updated in this PR. Just wanted to confirm if that is planned work for a separate PR or if it was just missed in this one.