ci: Install forc-node in gh-pages.yml (#6978)

## Description

Unblock
https://github.com/FuelLabs/sway/actions/runs/13629058982/job/38092580347

## Checklist

- [ ] I have linked to any relevant issues.
- [ ] I have commented my code, particularly in hard-to-understand
areas.
- [ ] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [ ] If my change requires substantial documentation changes, I have
[requested support from the DevRel
team](https://github.com/FuelLabs/devrel-requests/issues/new/choose)
- [ ] I have added tests that prove my fix is effective or that my
feature works.
- [ ] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [ ] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [ ] I have requested a review from the relevant team or maintainers.

Author: sdankel

.github/workflows/gh-pages.yml

@@ -32,6 +32,7 @@ jobs:
           cargo install --locked --debug --path ./forc-plugins/forc-doc
           cargo install --locked --debug --path ./forc-plugins/forc-crypto
           cargo install --locked --debug --path ./forc-plugins/forc-migrate
+          cargo install --locked --debug --path ./forc-plugins/forc-node
           cargo install --locked --debug forc-explore
       - name: Install mdbook-forc-documenter
         uses: actions-rs/cargo@v1