build(deps): update jackchuka/mdschema to v0.12.8

This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [jackchuka/mdschema](https://github.com/jackchuka/mdschema) | patch | `v0.12.7` → `v0.12.8` |

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.**

---

### Release Notes

<details>
<summary>jackchuka/mdschema (jackchuka/mdschema)</summary>

### [`v0.12.8`](https://github.com/jackchuka/mdschema/releases/tag/v0.12.8)

[Compare Source](jackchuka/mdschema@v0.12.7...v0.12.8)

#### What's Changed

- ci(deps): bump actions/setup-go from 6.3.0 to 6.4.0 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;58](jackchuka/mdschema#58)
- deps(deps): bump github.com/yuin/goldmark from 1.7.17 to 1.8.2 by [@&#8203;dependabot](https://github.com/dependabot)\[bot] in [#&#8203;57](jackchuka/mdschema#57)

**Full Changelog**: <jackchuka/mdschema@v0.12.7...v0.12.8>

</details>

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Author: ECG Bot

chezmoi/dot_config/aquaproj-aqua/aqua.yaml

@@ -267,7 +267,7 @@ packages:
 - name: skanehira/[email protected]
   description: Simple background process manager for Unix systems
   link: https://github.com/skanehira/ghost
-- name: jackchuka/[email protected].7
+- name: jackchuka/[email protected].8
   description: A declarative schema-based Markdown validator that helps maintain consistent documentation structure across projects
   link: https://github.com/jackchuka/mdschema
 - name: guumaster/[email protected]