Use shipmonk/coding-standard (#44)

Author: JanTvrdik

composer.json

@@ -19,9 +19,9 @@
         "phpstan/phpstan-phpunit": "^2.0.0",
         "phpstan/phpstan-strict-rules": "^2.0.0",
         "phpunit/phpunit": "^10.5.13",
+        "shipmonk/coding-standard": "^0.1.3",
         "shipmonk/composer-dependency-analyser": "^1.7.0",
-        "shipmonk/phpstan-rules": "^4.0.0",
-        "slevomat/coding-standard": "^8.15.0"
+        "shipmonk/phpstan-rules": "^4.0.0"
     },
     "autoload": {
         "psr-4": {