Add setup composer action

.gitea/workflows/quality.yml

@@ -19,14 +19,8 @@ jobs:
         username: ${{ secrets.REGISTRY_USERNAME }}
         password: ${{ secrets.REGISTRY_PASSWORD }}
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Auth registry
-        run: composer config --global http-basic.git.qlic.nl ${{ secrets.REGISTRY_USERNAME }} ${{ secrets.REGISTRY_PASSWORD }}
-
-      - name: Install dependencies
-        run: composer install
+      - name: Setup composer
+        uses: https://git.qlic.nl/actions/setup-composer@main
 
       - name: Run PHPStan
         run: ./vendor/bin/phpstan analyse