Migrate lightweight Github workflows to ubuntu-slim

[wwahammy]

What?

This PR migrates a few of the Github actions workflows to the ubuntu-slim sized runner

Why?

Github created a lower performance runner for lightweight operations. This should reduce power usage of developing the Gutenberg project. While perhaps not a vital change, given the number of times these runners run on Gutenberg, it's not an insignificant change.

How?

Simply changed runners for lightweight operations to ubuntu-slim.

Testing Instructions

Does the CI run? If so, we're good.

Use of AI Tools

Nope.

[github-actions]

Warning: Type of PR label mismatch

To merge this PR, it requires exactly 1 label indicating the type of PR. Other labels are optional and not being checked here.

• Required label: Any label starting with [Type].
• Labels found: .

Read more about Type labels in Gutenberg. Don't worry if you don't have the required permissions to add labels; the PR reviewer should be able to help with the task.

[github-actions]

The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the props-bot label.

If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message.

Co-authored-by: wwahammy <wwahammy@git.wordpress.org>

To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook.