chore(deps): bump actions/checkout from 3 to 4 (#562)

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](https://github.com/actions/checkout/compare/v3...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>
diff --git a/.github/workflows/manila.yml b/.github/workflows/manila.yml
index f85d482..f5fbc45 100644
--- a/.github/workflows/manila.yml
+++ b/.github/workflows/manila.yml
@@ -33,7 +33,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout project
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -48,7 +48,7 @@
           poetry self add "poetry-dynamic-versioning[plugin]"
 
       - name: Clone openstack/manila-image-elements
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           repository: openstack/manila-image-elements
           path: manila-image-elements