chore: don't install dependencies for PHP-CS-Fixer

Author: alexislefebvre

.github/workflows/qa.yml

@@ -9,6 +9,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@master
+
+      - name: Delete composer files to avoid installing dependencies
+        run: rm -v composer.json
+
       - name: PHP-CS-Fixer
         uses: docker://jakzal/phpqa:1.58.7-php7.4-alpine
         with: