chore(deps): update actions/checkout action to v4 (#1313)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [actions/checkout](https://togithub.com/actions/checkout) | action |
major | `v2` -> `v4` |

---

### Release Notes

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

###
[`v4`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v417)

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

- Bump the minor-npm-dependencies group across 1 directory with 4
updates by [@&#8203;dependabot](https://togithub.com/dependabot) in
[actions/checkout#1739
- Bump actions/checkout from 3 to 4 by
[@&#8203;dependabot](https://togithub.com/dependabot) in
[actions/checkout#1697
- Check out other refs/\* by commit by
[@&#8203;orhantoy](https://togithub.com/orhantoy) in
[actions/checkout#1774
- Pin actions/checkout's own workflows to a known, good, stable version.
by [@&#8203;jww3](https://togithub.com/jww3) in
[actions/checkout#1776

###
[`v3`](https://togithub.com/actions/checkout/blob/HEAD/CHANGELOG.md#v360)

[Compare Source](https://togithub.com/actions/checkout/compare/v2...v3)

- [Fix: Mark test scripts with Bash'isms to be run via
Bash](https://togithub.com/actions/checkout/pull/1377)
- [Add option to fetch tags even if fetch-depth >
0](https://togithub.com/actions/checkout/pull/579)

</details>

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.github/workflows/send-release-test-notification.yaml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: Check out repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Print Notification Details
       run: |