go-ceph: bump actions/checkout from 3 to 4

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]>

.github/workflows/main.yml

@@ -41,7 +41,7 @@ jobs:
     needs: go-versions
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: actions/setup-go@v4
       with:
         go-version: ${{ needs.go-versions.outputs.latest }}
@@ -75,7 +75,7 @@ jobs:
         - ceph_version: "reef"
           go_version: ${{ needs.go-versions.outputs.unstable }}
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Run tests
       run: make test-containers-test "CEPH_VERSION=${{ matrix.ceph_version }}" "GO_VERSION=${{ matrix.go_version }}" "RESULTS_DIR=$PWD/_results"
     - name: Clean up test containers

.github/workflows/report-stable.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
     # Checkout with fetch-depth=0 in order to fetch (all) tags.
     # The Makefile runs git commands to pass tag info to the apiage script.
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - name: Run makefile