build(deps): update rust to v1.91.1

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | patch | `1.91.0` -> `1.91.1` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

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### Release Notes

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

### [`v1.91.1`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1911-2025-11-10)

[Compare Source](rust-lang/rust@1.91.0...1.91.1)

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

<a id="1.91.1"></a>

- [Enable file locking support in illumos](rust-lang/rust#148322). This fixes Cargo not locking the build directory on illumos.
- [Fix `wasm_import_module` attribute cross-crate](rust-lang/rust#148363). This fixes linker errors on WASM targets.

</details>

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Author: ECG Bot

chezmoi/dot_config/mise/config.toml

@@ -10,7 +10,7 @@ pkl = "0.30.0"
 python = "3.14.0"
 pre-commit = "4.3.0"
 rclone = "1.71.1"
-rust = "1.91.0"
+rust = "1.91.1"
 slsa-verifier = "2.7.1"
 terraform-docs = "0.20.0"
 tflint = "0.59.1"