Remove monolog/monolog as dev requirement (#785)

Author: Melfo01

composer.json

@@ -44,7 +44,6 @@
         "doctrine/dbal": "^2.13||^3.0",
         "doctrine/doctrine-bundle": "^1.12||^2.5",
         "friendsofphp/php-cs-fixer": "^2.19||<=3.16.0",
-        "monolog/monolog": "^1.3||^2.0",
         "phpstan/extension-installer": "^1.0",
         "phpstan/phpstan": "^1.3",
         "phpstan/phpstan-phpunit": "^1.0",