Bump actions/checkout from 4 to 5 (#2790)

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/test.yml

@@ -45,7 +45,7 @@ jobs:
       BUNDLE_GEMFILE: ${{ matrix.gemfile }}
       JRUBY_OPTS: --debug
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - name: Update package list
       run: sudo apt update
     - name: Install ImageMagick and setup policy
@@ -68,7 +68,7 @@ jobs:
     name: RuboCop
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Install ImageMagick to build RMagick
         run: sudo apt-get install libmagickwand-dev
       - name: Set up Ruby