Update publish to use new container

[gbraad]

Summary by Sourcery

Update the documentation publishing workflow to use a newer container image and allow manual triggers.

CI:

• Update mdbook container image to ghcr.io/crc-org/mdbook:latest.
• Enable manual triggering via workflow_dispatch.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request updates the GitHub Actions workflow to use a new container image for building documentation and adds the ability to manually trigger the workflow.

No diagrams generated as the changes look simple and do not need a visual representation.

File-Level Changes

Change	Details	Files
Update the container image used for building documentation.	Change the container image from quay.io/crc-org/mdbook:0.4.43 to ghcr.io/crc-org/mdbook:latest in the podman run command.	.github/workflows/gh-pages.yaml
Add the ability to manually trigger the workflow.	Add the workflow_dispatch event trigger to the workflow configuration.	.github/workflows/gh-pages.yaml

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[sourcery-ai]

Hey @gbraad - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider pinning the container image ghcr.io/crc-org/mdbook to a specific version instead of latest to ensure reproducible builds.
• Could you add a brief description explaining the reason for changing the container image?

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

suggestion: Pinned version recommendation for mdbook image instead of using 'latest'.

Specifying an exact mdbook version prevents unexpected build changes when the image updates and ensures reproducible builds.

Suggested change

	run: podman run --rm -v $PWD:/workspace ghcr.io/crc-org/mdbook:latest build
	run: podman run --rm -v $PWD:/workspace ghcr.io/crc-org/mdbook:0.4.43 build