build(deps): bump actions/checkout from 1 to 4 (#459)

Bumps [actions/checkout](https://github.com/actions/checkout) from 1 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/go.yml

@@ -8,7 +8,7 @@
       "runs-on": "ubuntu-latest",
       strategy: { matrix: { "go-version": [ "stable", "oldstable"] } },
       steps: [
-        { name: "Check out code into the Go module directory", uses: "actions/checkout@v3" },
+        { name: "Check out code into the Go module directory", uses: "actions/checkout@v4" },
         {
           name: "Set up Go ${{ matrix.go-version }}",
           uses: "actions/setup-go@v4",

.github/workflows/merge.yml

@@ -11,7 +11,7 @@
       name: "Build",
       "runs-on": "ubuntu-latest",
       steps: [
-        {name: "Check out code into the Go module directory", uses: "actions/checkout@v1"},
+        {name: "Check out code into the Go module directory", uses: "actions/checkout@v4"},
         {name: "Test master", run: "make test-master"},
         {name: "Test release", run: "make test-release"},
       ],