PHP-CS-Fixer fixes

.forgejo/workflows/lint.yml

@@ -1,3 +1,4 @@
+---
 name: lint
 run-name: lint is launched by ${{ github.actor }}
 on: [push]
@@ -22,6 +23,5 @@ jobs:
       - name: Lint
         run: vendor/bin/phplint --no-cache --no-progress --exclude=vendor --verbose
       - name: PHP CS Fixer
-        run: vendor/bin/php-cs-fixer fix --dry-run --verbose --diff .
+        run: vendor/bin/php-cs-fixer check --using-cache=no --diff --verbose .
       - run: echo "🍏 This job's status is ${{ job.status }}."
-