chore: update nightly docs

[github-actions]

This is an automated PR to update the nightly docs.

[cursor]

PR Summary

Low Risk
Documentation-only submodule pointer updates with no impact on production code paths.

Overview
Automated nightly documentation sync from the scheduled Update Nightly Versions workflow (pnpm docs:update:nightly --from-workflow).

When upstream nightlies move ahead of what’s pinned in this repo, the job bumps the docs/nightly/* submodule references (Sway, fuels-ts, specs, and related doc sources) so the hub tracks the latest nightly builds. No application or runtime code is intended to change here.

No concrete file hunks were included in the supplied diff; if the PR is empty, the pins may already match the latest nightlies.

^{Reviewed by Cursor Bugbot for commit 332585e. Bugbot is set up for automated code reviews on this repo. Configure here.}