Bump actions/checkout from 3 to 4 (#5)

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/pull.yml

@@ -25,7 +25,7 @@ jobs:
   #   name: go-lint
   #   runs-on: ubuntu-latest
   #   steps:
-  #   - uses: actions/checkout@v3
+  #   - uses: actions/checkout@v4
   #   - uses: actions/setup-go@v4
   #     with:
   #       go-version-file: 'go.mod'
@@ -36,7 +36,7 @@ jobs:
   #   name: go-fmt
   #   runs-on: ubuntu-latest
   #   steps:
-  #   - uses: actions/checkout@v3
+  #   - uses: actions/checkout@v4
   #   - uses: actions/setup-go@v4
   #     with:
   #       go-version-file: 'go.mod'
@@ -47,7 +47,7 @@ jobs:
     # name: go-imports
     # runs-on: ubuntu-latest
     # steps:
-    # - uses: actions/checkout@v3
+    # - uses: actions/checkout@v4
     # - uses: actions/setup-go@v4
     #   with:
     #     go-version-file: 'go.mod'
@@ -61,7 +61,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Set up Go
       uses: actions/setup-go@v4
       with: