Bump actions/checkout from 3.5.3 to 4.0.0 (#576)

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.5.3 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.5.3...v4.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/acceptance-testing-bats.yml

@@ -14,7 +14,7 @@ jobs:
         go: ['1.19']
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v4.0.0
         with:
           fetch-depth: 0
           submodules: recursive

.github/workflows/acceptance-testing-e2e.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out slimtoolkit/slim repo
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4.0.0
 
       - name: Set up Go development environment
         uses: actions/[email protected]
@@ -64,7 +64,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out slimtoolkit/slim repo
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4.0.0
 
       - name: Set up Go development environment
         uses: actions/[email protected]
@@ -116,10 +116,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Check out slimtoolkit/slim repo
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4.0.0
 
       - name: Check out slimtoolkit/examples repo
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4.0.0
         with:
           repository: slimtoolkit/examples
           path: e2e

.github/workflows/unit-testing.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out slimtoolkit/slim repo
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4.0.0
 
       - name: Set up Go development environment
         uses: actions/[email protected]