fix: bump actions/checkout from 3 to 4 (#13)

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

.github/workflows/depup.yml

@@ -10,7 +10,7 @@ jobs:
   reviewdog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-depup@v1
         id: depup
         with:

.github/workflows/release.yml

@@ -14,7 +14,7 @@ jobs:
     if: github.event.action != 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       # Bump version on merging Pull Requests with specific labels.
       # (bump:major,bump:minor,bump:patch)
@@ -53,6 +53,6 @@ jobs:
     if: github.event.action == 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Post bumpr status comment
         uses: haya14busa/action-bumpr@v1

.github/workflows/reviewdog.yml

@@ -9,7 +9,7 @@ jobs:
     name: runner / shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: haya14busa/action-cond@v1
         id: reporter
         with:
@@ -26,7 +26,7 @@ jobs:
     name: runner / misspell
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-misspell@v1
         with:
           github_token: ${{ secrets.github_token }}
@@ -38,7 +38,7 @@ jobs:
     name: runner / alex
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-alex@v1
         with:
           github_token: ${{ secrets.github_token }}

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
       matrix:
         python-version: [3.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }} environment
         uses: actions/setup-python@v5
         with:
@@ -34,7 +34,7 @@ jobs:
       matrix:
         python-version: [3.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }} environment
         uses: actions/setup-python@v5
         with:
@@ -56,7 +56,7 @@ jobs:
       matrix:
         python-version: [3.7]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }} environment
         uses: actions/setup-python@v5
         with: