deps: Update actions/checkout action to v4.1.6 (#381)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://github.com/actions/checkout) | action |
patch | `v4.1.1` -> `v4.1.6` |

---

### Release Notes

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

###
[`v4.1.6`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v416)

[Compare
Source](https://github.com/actions/checkout/compare/v4.1.5...v4.1.6)

- Check platform to set archive extension appropriately by
[@&#8203;cory-miller](https://github.com/cory-miller) in
[actions/checkout#1732

###
[`v4.1.5`](https://github.com/actions/checkout/releases/tag/v4.1.5)

[Compare
Source](https://github.com/actions/checkout/compare/v4.1.4...v4.1.5)

#### What's Changed

- Update NPM dependencies by
[@&#8203;cory-miller](https://github.com/cory-miller) in
[actions/checkout#1703
- Bump github/codeql-action from 2 to 3 by
[@&#8203;dependabot](https://github.com/dependabot) in
[actions/checkout#1694
- Bump actions/setup-node from 1 to 4 by
[@&#8203;dependabot](https://github.com/dependabot) in
[actions/checkout#1696
- Bump actions/upload-artifact from 2 to 4 by
[@&#8203;dependabot](https://github.com/dependabot) in
[actions/checkout#1695
- README: Suggest `user.email` to be
`41898282+github-actions[bot]@&#8203;users.noreply.github.com` by
[@&#8203;cory-miller](https://github.com/cory-miller) in
[actions/checkout#1707

**Full Changelog**:
actions/checkout@v4.1.4...v4.1.5

###
[`v4.1.4`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v414)

[Compare
Source](https://github.com/actions/checkout/compare/v4.1.3...v4.1.4)

- Disable `extensions.worktreeConfig` when disabling `sparse-checkout`
by [@&#8203;jww3](https://github.com/jww3) in
[actions/checkout#1692
- Add dependabot config by
[@&#8203;cory-miller](https://github.com/cory-miller) in
[actions/checkout#1688
- Bump the minor-actions-dependencies group with 2 updates by
[@&#8203;dependabot](https://github.com/dependabot) in
[actions/checkout#1693
- Bump word-wrap from 1.2.3 to 1.2.5 by
[@&#8203;dependabot](https://github.com/dependabot) in
[actions/checkout#1643

###
[`v4.1.3`](https://github.com/actions/checkout/releases/tag/v4.1.3)

[Compare
Source](https://github.com/actions/checkout/compare/v4.1.2...v4.1.3)

#### What's Changed

- Update `actions/checkout` version in `update-main-version.yml` by
[@&#8203;jww3](https://github.com/jww3) in
[actions/checkout#1650
- Check git version before attempting to disable `sparse-checkout` by
[@&#8203;jww3](https://github.com/jww3) in
[actions/checkout#1656
- Add SSH user parameter by
[@&#8203;cory-miller](https://github.com/cory-miller) in
[actions/checkout#1685

**Full Changelog**:
actions/checkout@v4.1.2...v4.1.3

###
[`v4.1.2`](https://github.com/actions/checkout/blob/HEAD/CHANGELOG.md#v412)

[Compare
Source](https://github.com/actions/checkout/compare/v4.1.1...v4.1.2)

- Fix: Disable sparse checkout whenever `sparse-checkout` option is not
present [@&#8203;dscho](https://github.com/dscho) in
[actions/checkout#1598

</details>

---

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Automerge - At any time (no schedule defined).

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are satisfied.

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---

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---

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.github/workflows/tests.yml

@@ -66,7 +66,7 @@ jobs:
             }
 
       - name: Checkout code
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4.1.6
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}