Update actions

[cderv]

No description provided.

[Copilot]

Pull request overview

This PR updates GitHub Actions workflows to use newer action versions and adjusts Pandoc versions used in CI to cover newer and nightly builds.

Changes:

• Bumped actions/checkout references in workflows.
• Updated R-CMD-check matrix Pandoc versions (including adding a nightly run and reintroducing 3.1.1 coverage on Ubuntu).
• Switched daily Pandoc “devel” workflow to install Pandoc via r-lib/actions/setup-pandoc@v2 with pandoc-version: nightly.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
.github/workflows/update-examples.yaml	Updates the checkout action version used when building/deploying examples.
.github/workflows/R-CMD-check.yaml	Updates checkout action version; refreshes Pandoc matrix entries and coverage trigger Pandoc version.
.github/workflows/check-pandoc-daily.yaml	Updates checkout action version; changes Pandoc install step to setup-pandoc with nightly.

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[cderv]

@yihui it seems somehow that pagedown fails now in CI. Not sure why - but as you've made a new release to you see why ?

Also I see you have fork or redo actions at: https://github.com/yihui/actions/

Should we use that ? Is this supposed to help us better in rmarkdown ecosystem rather than using r-lib/actions ?

[yihui]

I don't know why from a quick look at the CI logs, either. It's failing on Windows and Ubuntu but not macOS. Perhaps you can let Claude have a quick look?

Also I see you have fork or redo actions at: https://github.com/yihui/actions/

Should we use that ? Is this supposed to help us better in rmarkdown ecosystem rather than using r-lib/actions ?

The benefit of using my actions for rmarkdown-related packages may not be significant. My actions are best for packages with a small number of deps, in which case using pak and rcmdcheck is often an overkill. I switched tinytex's actions over to mine mainly because tinytex has only one dependency.

[yihui]

BTW, given that Pandoc 3.0 is more than 3 years old now, perhaps we can drop the workflows for pandoc 2.x? For bookdown, I'm only testing two versions now: one version used by RStudio/Quarto, and the other is the latest version (to catch problems early).

[cderv]

yes good idea. I've kept some versions known to have regression. and historically because default on ubuntu was an old pandoc. I don't know which is it now.

[yihui]

Ubuntu 24.04 has Pandoc 3.x: https://manpages.ubuntu.com/manpages/noble/man1/pandoc.1.html Older Ubuntu releases still have 2.x.

[cderv]

Ok to do with Pandoc 3 has min ?

[yihui]

I'm fine with that. We can always add a version back when users actually find bugs there.