feat(bump): dependencies

Author: Mte90

composer.json

@@ -4,12 +4,12 @@
     "description": "Codeat PHPCS ruleset for OOP WordPress development on PHP 7.0+, include phpmd ruleset",
     "license": "MIT",
     "require": {
-        "php": "~7.2",
-        "squizlabs/php_codesniffer": "^3.5.3",
+        "php": ">=7.2",
+        "squizlabs/php_codesniffer": "^3.6.2",
         "phpcompatibility/php-compatibility": "*",
         "phpcompatibility/phpcompatibility-wp": "*",
         "wp-coding-standards/wpcs": "*",
-        "slevomat/coding-standard": "^6.0.0"
+        "slevomat/coding-standard": "^7.0.18"
     },
     "suggest": {
         "dealerdirect/phpcodesniffer-composer-installer": "^0.5.0"