Bump to 0.70.2 (#7498)

## Description

This PR bumps `forc` and `std` to v0.70.2.

## 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.
- [x] 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).
- [x] I have requested a review from the relevant team or maintainers.

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Bumps Sway/Forc workspace and plugins to v0.70.2 and updates the
gh-pages workflow to use Rust 1.90.0.
> 
> - **Release/version bumps**:
>   - Set workspace `version` to `0.70.2` in `Cargo.toml`.
> - Update internal crates/plugins (`forc*`, `sway*`, `sway-ir*`)
dependency versions to `0.70.2`.
>   - Bump `sway-lib-std/Forc.toml` `version` to `0.70.2`.
>   - Refresh `Cargo.lock` with corresponding `0.70.2` crate versions.
> - **CI**:
> - `.github/workflows/gh-pages.yml`: Rust toolchain `1.86.0` →
`1.90.0`.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
cbc2079. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: ironcev

.github/workflows/gh-pages.yml

@@ -9,7 +9,7 @@ on:
   workflow_dispatch:
 
 env:
-  RUST_VERSION: 1.86.0
+  RUST_VERSION: 1.90.0
 
 permissions:
   contents: write