Update GitHub Actions to use version 4 for checkout and cache

Author: luanfreitasdev

.github/workflows/code-style.yml

@@ -17,7 +17,7 @@ jobs:
         node-version: [ "20.x" ]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -26,7 +26,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v4
         with:
           path: vendor
           key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}