Require highest bug fix version for slevomat/coding-standard

Author: tlsvda

composer.json

@@ -14,7 +14,7 @@
         "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
         "escapestudios/symfony2-coding-standard": "^3.6",
         "phpmd/phpmd": "^2.6",
-        "slevomat/coding-standard": "^7.0.1",
+        "slevomat/coding-standard": "^7.0.9",
         "squizlabs/php_codesniffer": "^3.4"
     },
     "autoload": {