build(deps): update rust to v1.85.1

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | patch | `1.85.0` -> `1.85.1` |

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>

### [`v1.85.1`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1851-2025-03-18)

[Compare Source](rust-lang/rust@1.85.0...1.85.1)

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

<a id="1.85.1"></a>

-   [Fix the doctest-merging feature of the 2024 Edition.](rust-lang/rust#137899)
-   [Relax some `target_feature` checks when generating docs.](rust-lang/rust#137632)
-   [Fix errors in `std::fs::rename` on Windows 10, version 1607.](rust-lang/rust#137528)
-   [Downgrade bootstrap `cc` to fix custom targets.](rust-lang/rust#137460)
-   [Skip submodule updates when building Rust from a source tarball.](rust-lang/rust#137338)

</details>

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Author: ECG Bot

chezmoi/dot_config/mise/config.toml

@@ -9,7 +9,7 @@ python = "3.13.2"
 pre-commit = "latest"
 protoc = "latest"
 rclone = "1.69.1"
-rust = "1.85.0"
+rust = "1.85.1"
 slsa-verifier = "2.7.0"
 terraform-docs = "latest"
 usage = "2.0.5"