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/linters.yml

@@ -13,7 +13,7 @@ jobs:
     container: debian:stable
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install linters
         run: |
            apt-get update && apt-get install -y git util-linux shellcheck shfmt reuse

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
     container: debian:stable
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install bats
         run: |
            apt-get update && apt-get install -y bats jq zstd git util-linux