Update github actions

Author: ostrolucky

Diff for: .github/workflows/continuous-integration.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: "ubuntu-latest"
     steps:
       - name: "Checkout repository"
-        uses: "actions/checkout@v2"
+        uses: "actions/checkout@v4"
 
       - name: "Install PHP"
         uses: "shivammathur/setup-php@v2"
@@ -28,7 +28,7 @@ jobs:
           tools: "composer-normalize"
 
       - name: "Install dependencies (Composer)"
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@v3"
 
       - name: "Check coding standards (PHP_CodeSniffer)"
         shell: "bash"