Update Rust to v1.98.1 (#1702)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [rust](https://rust-lang.org/)
([source](https://redirect.github.com/rust-lang/rust),
[changelog](https://redirect.github.com/rust-lang/rust/blob/main/RELEASES.md))
| toolchain | patch | `1.98.0` → `1.98.1` |
| [rust](https://redirect.github.com/rust-lang/rust) | | patch |
`1.98.0` → `1.98.1` |

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

###
[`v1.98.1`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1981-2026-09-03)

[Compare
Source](https://redirect.github.com/rust-lang/rust/compare/1.98.0...1.98.1)

\===========================

<a id="1.98.1"></a>

- [rustc: fix miscompilation in generating
vtables](https://redirect.github.com/rust-lang/rust/issues/161441)

</details>

---

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rust-toolchain.toml

@@ -4,5 +4,5 @@
 # The intent is to keep this updated as new stable versions are relased.
 
 [toolchain]
-channel = "1.98.0"
+channel = "1.98.1"
 profile = "default"