Pin PHP-CS-Fixer to 3.16.0

There is a problem with PHP-CS-Fixer 3.17.0

@cleptric suggested pinning it.

Author: ruudk

composer.json

@@ -42,7 +42,7 @@
     "require-dev": {
         "doctrine/dbal": "^2.13||^3.0",
         "doctrine/doctrine-bundle": "^1.12||^2.5",
-        "friendsofphp/php-cs-fixer": "^2.19||^3.6",
+        "friendsofphp/php-cs-fixer": "^2.19||=3.16.0",
         "jangregor/phpstan-prophecy": "^1.0",
         "monolog/monolog": "^1.3||^2.0",
         "phpspec/prophecy": "!=1.11.0",