Bump GitHub actions to latest versions

[deining]

This PR bumps GitHub actions to their latest versions. It also fixes a typo in a comment on the way.

[tdelmas]

I think it's better to update HUGO_VERSION in a separate PR

[deining]

I think it's better to update HUGO_VERSION in a separate PR

I reworked the PR, it now containes updates for the actions only.

If wanted, I can author a PR bumping the HUGO_VERSION. What version do hugo do you want? Is it fine to use the latest version v0.117.0?

[deining]

I think it's better to update HUGO_VERSION in a separate PR

I reworked the PR, it now containes updates for the actions only.

If wanted, I can author another PR bumping the HUGO_VERSION. What version do hugo do you want? Is it fine to use the latest version v0.117.0?

[tdelmas]

If wanted, I can author another PR bumping the HUGO_VERSION. What version do hugo do you want? Is it fine to use the latest version v0.117.0?

Sure! The latest version if possible. If I remember correctly, it needs to be updated in two places. Here are the instructions to do it:

https://github.com/letsencrypt/website/blob/main/DOCUMENTATION.md#how-to-upgrade-hugo
(The step "3. Check the diff" must be checked carefully to avoid unwanted surprises.)

[deining]

Friendly ping.
@scottmakestech: Any objections against merging my PR?