chore(deps): bump actions/checkout from 3.6.0 to 4.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 3.6.0 to 4.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3.6.0...v4.0.0)

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

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

.github/workflows/continuous-integration.yml

@@ -27,7 +27,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v3.6.0"
+        uses: "actions/checkout@v4.0.0"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@2.25.5"
@@ -51,7 +51,7 @@ jobs:
 
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v3.6.0"
+        uses: "actions/checkout@v4.0.0"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@2.25.5"
@@ -76,7 +76,7 @@ jobs:
 
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v3.6.0"
+        uses: "actions/checkout@v4.0.0"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@2.25.5"
@@ -108,7 +108,7 @@ jobs:
 
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v3.6.0"
+        uses: "actions/checkout@v4.0.0"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@2.25.5"
@@ -151,7 +151,7 @@ jobs:
 
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v3.6.0"
+        uses: "actions/checkout@v4.0.0"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@2.25.5"