ci: remove deprecated composer flag

Author: ecastro98

.github/workflows/php.yml

@@ -21,7 +21,7 @@ jobs:
         php-version: ${{ matrix.php-versions }}
 
     - name: Install dependencies
-      run: composer install --prefer-dist --no-progress --no-suggest
+      run: composer install --prefer-dist --no-progress
 
     - name: Run test suite
       run: composer test