chore(deps): update actions/checkout action to v6.0.2 (#58)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://github.com/actions/checkout) | action | patch | `v6.0.1` → `v6.0.2` |

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### Release Notes

<details>
<summary>actions/checkout (actions/checkout)</summary>

### [`v6.0.2`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v602)

[Compare Source](https://github.com/actions/checkout/compare/v6.0.1...v6.0.2)

- Fix tag handling: preserve annotations and explicit fetch-tags by [@&#8203;ericsciple](https://github.com/ericsciple) in [#&#8203;2356](https://github.com/actions/checkout/pull/2356)

</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 is behind base branch, 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

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
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Reviewed-on: #58
Co-authored-by: renovate[bot] <renovate-bot@git.tainton.uk>
Co-committed-by: renovate[bot] <renovate-bot@git.tainton.uk>

.github/workflows/ci-python-poetry.yml

@@ -23,7 +23,7 @@ jobs:
           echo "value=${PYTHON_VERSION:-"3.11"}" >> $GITHUB_OUTPUT
 
       - name: Check out repository code
-        uses: actions/checkout@v6.0.1
+        uses: actions/checkout@v6.0.2
         with:
           fetch-depth: 0