fix(deps): 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] <support@github.com>

.github/workflows/build.yml

@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3 #https://github.com/actions/checkout
+      uses: actions/checkout@v4 #https://github.com/actions/checkout
 
     - name: Run shellcheck
       run: bash tests/run-shellcheck.sh
@@ -64,7 +64,7 @@ jobs:
           - { os: macos-12, test_shell: zsh }
     steps:
     - name: Git Checkout
-      uses: actions/checkout@v3 #https://github.com/actions/checkout
+      uses: actions/checkout@v4 #https://github.com/actions/checkout
 
     - name: Install ${{ matrix.test_shell }}
       run: |