Bump actions/checkout from 3 to 4 in the github_actions group

Bumps the github_actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `actions/checkout` from 3 to 4
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: github_actions
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/pull_request.yml

@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
         with:
           channel: 'stable'
@@ -25,7 +25,7 @@ jobs:
   pana:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
 
       - name: Install Dependencies

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
   pana:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: subosito/flutter-action@v2
 
       - name: Install Dependencies