Bump actions/checkout from 3 to 4 (#361)

Bumps [actions/checkout](https://github.com/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
...

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

.github/workflows/pre-release-tests.yml

@@ -21,7 +21,7 @@ jobs:
     name: integration-tests-against-rc (dart ${{ matrix.version }})
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Get the latest Meilisearch RC
         run: echo "MEILISEARCH_VERSION=$(curl https://raw.githubusercontent.com/meilisearch/integration-guides/main/scripts/get-latest-meilisearch-rc.sh | bash)" >> $GITHUB_ENV
       - name: Meilisearch (${{ env.MEILISEARCH_VERSION }}) setup with Docker

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Check release validity
         run: sh .github/scripts/check-release.sh
       - name: Publish

.github/workflows/tests.yml

@@ -34,7 +34,7 @@ jobs:
           - 7700:7700
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dart-lang/setup-dart@v1
         with:
           sdk: ${{ matrix.version }}
@@ -60,7 +60,7 @@ jobs:
     container:
       image: dart:latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Install dependencies
         run: |
           dart pub get
@@ -72,7 +72,7 @@ jobs:
     name: Yaml linting check
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Yaml lint check
         uses: ibiqlik/action-yamllint@v3
         with:
@@ -97,7 +97,7 @@ jobs:
     container:
       image: dart:latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: dart pub global activate pana
       - name: Run pana
         id: pana-run