use origin php setup action

.github/workflows/releases.yml

@@ -20,19 +20,18 @@ jobs:
     - uses: actions/checkout@v2
 
     # PHP
-    #- name: Cache Composer dependencies
+    - name: Setup PHP
-    #  uses: actions/cache@v2
+      uses: shivammathur/setup-php@v2
-    #  with:
-    #    path: /tmp/composer-cache
-    #    key: ${{ runner.os }}-${{ matrix.php-version }}-${{ hashFiles('**/composer.lock') }}
-
-    - name: Install dependencies
-      uses: php-actions/composer@v6
       with:
-        php_version: ${{ matrix.php-version }}
+        php-version: ${{ matrix.php-version }}
-        command: install
+        tools: composer:v2.3
-        #    php_extensions: json pdo bcmath
+        extensions: bcmath
-        version: 2.3.x
+
+    - name: Validate composer.json and composer.lock
+      run: composer validate
+
+    - name: Install PHP dependencies
+      run: composer install --prefer-dist --no-progress --no-suggest
 
     - name: Symlink Monarc modules
       run: |