chore(deps): update dependency prettier to v3.8.4 (#79)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [prettier](https://prettier.io) ([source](https://github.com/prettier/prettier)) | [`3.8.3` → `3.8.4`](https://renovatebot.com/diffs/npm/prettier/3.8.3/3.8.4) | ![age](https://developer.mend.io/api/mc/badges/age/npm/prettier/3.8.4?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/prettier/3.8.3/3.8.4?slim=true) |

---

### Release Notes

<details>
<summary>prettier/prettier (prettier)</summary>

### [`v3.8.4`](https://github.com/prettier/prettier/blob/HEAD/CHANGELOG.md#384)

[Compare Source](https://github.com/prettier/prettier/compare/3.8.3...3.8.4)

[diff](https://github.com/prettier/prettier/compare/3.8.3...3.8.4)

##### Markdown: Fix blank lines between list items and nested sub-lists being removed in Markdown/MDX ([#&#8203;17746](https://github.com/prettier/prettier/pull/17746) by [@&#8203;byplayer](https://github.com/byplayer))

Prettier was removing blank lines between list items and their nested sub-lists, converting loose lists into tight lists and changing their semantic meaning.

<!-- prettier-ignore -->

```markdown
<!-- Input -->
- a

  - b

- c

  - d

<!-- Prettier 3.8.3 -->
- a
  - b
- c
  - d

<!-- Prettier 3.8.4 -->
- a

  - b

- c

  - d
```

</details>

---

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---

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---

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Reviewed-on: #79
Reviewed-by: t.behrendt <2+t.behrendt@noreply.localhost>
Co-authored-by: Renovate Bot <renovate@t00n.de>
Co-committed-by: Renovate Bot <renovate@t00n.de>

package.json

@@ -16,7 +16,7 @@
     "@types/node": "24.13.1",
     "esbuild": "0.28.0",
     "jest": "30.4.2",
-    "prettier": "3.8.3",
+    "prettier": "3.8.4",
     "ts-jest": "29.4.11",
     "typescript": "5.9.3"
   },