chore(deps): update actions/checkout action to v4 (#65)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://togithub.com/actions/checkout) | action |
major | `v3` -> `v4` |

---

### Release Notes

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

###
[`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v400)

[Compare Source](https://togithub.com/actions/checkout/compare/v3...v4)

- [Support fetching without the --progress
option](https://togithub.com/actions/checkout/pull/1067)
-   [Update to node20](https://togithub.com/actions/checkout/pull/1436)

</details>

---

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are satisfied.

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rebase/retry checkbox.

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.github/workflows/ansible-tests-pr.yml

@@ -32,7 +32,7 @@ jobs:
         working-directory: .ansible/collections/ansible_collections/equinix/cloud
     steps:
       - name: checkout Ansible collection
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           name: equinix-labs/ansible-collection-equinix
           path: .ansible/collections/ansible_collections/equinix/cloud
@@ -59,7 +59,7 @@ jobs:
         run: rm -rf ~/.ansible/test && mkdir -p ~/.ansible/test && ssh-keygen -m PEM -q -t rsa -N '' -f ~/.ansible/test/id_rsa
 
       - name: checkout Python SDK, this PR
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: /tmp/metal-python
           ref: ${{ github.event.pull_request.head.sha || github.ref }}