chore(mise): upgrade prek - #117

Automated mise tool upgrades from local config.

mise-managed tools:
- `prek`

Command: `mise upgrade --bump --local prek`

<details>
<summary>Version changelog (prek)</summary>

| Tool | Requested | Installed |
|------|-----------|-----------|
| `prek` | `0.5.3` → `0.5.4` | `0.5.3` → `0.5.4` |

</details>

<details>
<summary>Release notes (1 tools)</summary>

<details>
<summary>prek: `0.5.3` → `0.5.4` (j178/prek)</summary>

### v0.5.4

## Release Notes

Released on 2026-09-28.

### Highlights

#### Faster builtin hooks

In our end-to-end benchmark, prek is about 38% faster than 0.5.3, with some builtin
hooks up to 273% faster (`check-yaml`: 273%, `check-json`: 80%,
`check-merge-conflict`: 71%).

### Enhancements

- Add `include_deleted` to allow hooks to include deleted files ([#2733](j178/prek#2733))
- Add `--check` and simplify `end-of-file-fixer` ([#2764](j178/prek#2764))
- Add `--check` to `file-contents-sorter` ([#2765](j178/prek#2765))
- Add `--check` to `requirements-txt-fixer` ([#2766](j178/prek#2766))
- Add `--check` to `trailing-whitespace` ([#2763](j178/prek#2763))
- Expose and document `prek util generate-shell-completion` ([#2727](j178/prek#2727))
- Support `hide_status` in project and user configuration ([#2760](j178/prek#2760))
- Support look-around regex in builtin pattern hooks ([#2732](j178/prek#2732))

### Performance

- Cache the resolved Git executable on macOS ([#2726](j178/prek#2726))
- Combine and cache Git repository path queries ([#2724](j178/prek#2724))
- Optimize common builtin hook execution ([#2768](j178/prek#2768))
- Optimize scanning in `mixed-line-ending` and `trailing-whitespace` ([#2769](j178/prek#2769))
- Scan `check-merge-conflict` files in fixed-size blocks ([#2781](j178/prek#2781))
- Use SIMD UTF-8 validation in `check-json`, `check-toml`, and `check-yaml` ([#2770](j178/prek#2770))

### Bug fixes

- Retry transient rename failures on Windows ([#2756](j178/prek#2756))
- Use PATH to resolve prek in completion scripts ([#2719](j178/prek#2719))

### Documentation

- Clarify… (truncated)

</details>

</details>

Modified files:
- `.mise.toml`