chore: update nightly docs

[github-actions]

This is an automated PR to update the nightly docs.

[cursor]

PR Summary

Low Risk
Documentation and submodule reference updates only; no runtime or security-sensitive code paths are modified.

Overview
Automated nightly documentation refresh — no application code changes in the visible diff.

This PR is generated by the scheduled Update Nightly Versions workflow, which runs pnpm docs:update:nightly to sync the docs/nightly/* documentation submodules (e.g. Sway, fuels SDKs, specs, and related guides) to their current upstream revisions.

^{Reviewed by Cursor Bugbot for commit ffecec8. Bugbot is set up for automated code reviews on this repo. Configure here.}