Remove php-cs-fixer because it is not yet compatible with symfony 6

Author: W0rma

.github/workflows/continuous-integration.yml

@@ -80,6 +80,9 @@ jobs:
         run: |
           composer update --no-interaction --no-progress ${{ matrix.composer-flags }}
 
+      - name: "Remove php-cs-fixer for symfony 6"
+        run: composer remove friendsofphp/php-cs-fixer --dev
+
       - name: "Run PHPUnit"
         if: "${{ matrix.coverage != '' }}"
         run: |