Nothing uses them anymore after #3074.

* Upgrade node20: 20.8.1 → 20.13.1

* Call out the release process for `alpine_nodejs` in a comment

* move the comment to the end of the line so it's more obvious which variable it's talking about

(We don't actually install `git`.  We simply get the prerequisites out of the way.)

`add-apt-repository` depends on `gpg-agent`

* Bump xunit from 2.4.1 to 2.7.1 in /src

Bumps [xunit](https://github.com/xunit/xunit) from 2.4.1 to 2.7.1.
- [Commits](xunit/xunit@2.4.1...2.7.1)

---
updated-dependencies:
- dependency-name: xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* Appease xunit warnings after upgrading to v2.7.1

* Appease the whitespace linter

* Appease the whitespace linter

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Patrick Ellis <319655+pje@users.noreply.github.com>