build(deps): update golangci/golangci-lint-action action to v6 (#11)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
|
[golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action)
| action | major | `v5` -> `v6` |

---

### Release Notes

<details>
<summary>golangci/golangci-lint-action
(golangci/golangci-lint-action)</summary>

###
[`v6`](https://github.com/golangci/golangci-lint-action/compare/v5...v6)

[Compare
Source](https://github.com/golangci/golangci-lint-action/compare/v5...v6)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

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

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

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.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
           cache: false # golangci-lint-action does caching
 
       - name: Lint
-        uses: golangci/golangci-lint-action@v5
+        uses: golangci/golangci-lint-action@v6
 
   test:
     name: Test