chore(deps): update astral-sh/setup-uv action to v6 (#731)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [astral-sh/setup-uv](https://redirect.github.com/astral-sh/setup-uv) |
action | major | `v5` -> `v6` |

---

### Release Notes

<details>
<summary>astral-sh/setup-uv (astral-sh/setup-uv)</summary>

###
[`v6`](https://redirect.github.com/astral-sh/setup-uv/compare/v5...v6)

[Compare
Source](https://redirect.github.com/astral-sh/setup-uv/compare/v5...v6)

</details>

---

### Configuration

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are satisfied.

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rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

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.github/workflows/test.yml

@@ -284,7 +284,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Install the latest version of uv
-        uses: astral-sh/setup-uv@d4b2f3b6ecc6e67c4457f6d3e41ec42d3d0fcb86 # v5
+        uses: astral-sh/setup-uv@6b9c6063abd6010835644d4c2e1bef4cf5cd0fca # v6
       - name: Run zizmor 🌈
         run: uvx zizmor --format=sarif . > results.sarif
         env: