Merge pull request #9 from Jeckel-Lab/dependabot/composer/phpro/grumphp-tw-0.18.0

Update phpro/grumphp requirement from ^0.17.2 to ^0.18.0

Author: jeckel

composer.json

@@ -17,7 +17,7 @@
         "vimeo/psalm": "^3.8",
         "phpmd/phpmd": "^2.8",
         "squizlabs/php_codesniffer": "^3.5",
-        "phpro/grumphp": "^0.17.2"
+        "phpro/grumphp": "^0.18.0"
     },
     "license": "MIT",
     "authors": [