Update dependency wp-coding-standards/wpcs to v2.3.0 (#62)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

composer.json

@@ -16,7 +16,7 @@
     "php-coveralls/php-coveralls": "2.2.0",
     "phpcompatibility/phpcompatibility-wp": "2.1.0",
     "phpunit/phpunit": "8.5.2",
-    "wp-coding-standards/wpcs": "2.2.1",
+    "wp-coding-standards/wpcs": "2.3.0",
     "wpsh/local": "0.2.3"
   },
   "autoload": {