Bump actions/checkout from 2 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...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/codespell.yml

@@ -17,7 +17,7 @@ jobs:
     steps:
     -
       name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     -
       name: Spell-Checking
       uses: codespell-project/actions-codespell@master

.github/workflows/editorconfig-checker.yml

@@ -19,6 +19,6 @@ jobs:
       name: editorconfig-checker
       runs-on: ubuntu-20.04
       steps:
-        - uses: actions/checkout@v3
+        - uses: actions/checkout@v4
         - uses: editorconfig-checker/action-editorconfig-checker@main
         - run: editorconfig-checker

.github/workflows/shellcheck.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
       # Required to access files of this repository
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       # Download Shellcheck and add it to the workflow path
       - name: Download Shellcheck