chore(deps): update pnpm/action-setup action to v6 (#291)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [pnpm/action-setup](https://redirect.github.com/pnpm/action-setup) |
action | major | `v5.0.0` → `v6.0.0` |

---

### Release Notes

<details>
<summary>pnpm/action-setup (pnpm/action-setup)</summary>

###
[`v6.0.0`](https://redirect.github.com/pnpm/action-setup/compare/v5.0.0...v6.0.0)

[Compare
Source](https://redirect.github.com/pnpm/action-setup/compare/v5.0.0...v6.0.0)

</details>

---

### Configuration

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  - At any time (no schedule defined)
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are satisfied.

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rebase/retry checkbox.

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---

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---

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.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
       - name: Setup pnpm
-        uses: pnpm/action-setup@fc06bc1257f339d1d5d8b3a19a8cae5388b55320 # v5.0.0
+        uses: pnpm/action-setup@08c4be7e2e672a47d11bd04269e27e5f3e8529cb # v6.0.0
       - name: Setup Node.js
         uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
         with: