ci(deps): bump actions/checkout from 4 to 5 (#3240)

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](https://github.com/actions/checkout/compare/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>

.github/workflows/build-test-site.yaml

@@ -18,7 +18,7 @@ jobs:
     #        node-version: [18.x]
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           submodules: true # Fetch any Git submodules (true OR recursive)
           fetch-depth: 0 # Fetch all history for .GitInfo and .Lastmod

.github/workflows/release-modules.yml

@@ -26,7 +26,7 @@ jobs:
       LOG_LEVEL: INFO
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           fetch-depth: 0
 

.github/workflows/split-packages.yaml

@@ -31,7 +31,7 @@ jobs:
             split_repository: 'theme-landing-page'
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
 
       # step if no tag is pushed
       - if: ${{ !startsWith(github.ref, 'refs/tags/') }}