Bump actions/checkout from 4 to 5 (#49)

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 5.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  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>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: Checkout code from current branch
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Setup ROS
       uses: ros-tooling/setup-ros@v0.7
     - name: Install dependencies
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout code from current branch
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
     - name: Build in Docker container