Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
     #       - 8080:8080
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: recursive
 
@@ -72,7 +72,7 @@ jobs:
   #   if: github.ref == 'refs/heads/main'
   #   steps:
   #     - name: Checkout
-  #       uses: actions/checkout@v3
+  #       uses: actions/checkout@v4
   #       with:
   #         fetch-depth: 0
   #     - name: Setup Node.js