build(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] <[email protected]>

.github/workflows/build_test.yml

@@ -49,7 +49,7 @@ jobs:
       volumes: ["/var/tmp:/var/tmp", "/dev:/dev"]
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Install dependencies
         run: ./.github/workflows/build-${{ matrix.distro.name }}.sh DEPS

.github/workflows/differential-pylint.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Repository checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - id: PyLint
         name: Differential PyLint

.github/workflows/differential-shellcheck.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps: 
       - name: Repository checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0