Bump actions/checkout from 4 to 5 (#7)

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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-24.04-arm
     container: swift:latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - run: swift build --build-tests
     - run: swift test --skip-build --enable-swift-testing --parallel
       env:
@@ -22,5 +22,5 @@ jobs:
     runs-on: ubuntu-24.04-arm
     container: swift:latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: swift format lint -r -p -s .

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - run: gh release create ${{ github.ref_name }} --generate-notes
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}