Bump actions/checkout from 4 to 5

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]>

Author: dependabot[bot]

.github/workflows/flutter.yml

@@ -18,7 +18,7 @@ jobs:
       matrix:
         flutter_version: [stable, beta]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Flutter
         uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
         with:

.github/workflows/publish.yml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dart-lang/setup-dart@v1
       - uses: subosito/flutter-action@e938fdf56512cc96ef2f93601a5a40bde3801046
         with: