tagging wpcs's latest commit as dependency in composer

need to do this because we are using sanitize_url() which has been marked as undeprecated but a new PHPCS release isn't out

Author: ashfame

composer.json

@@ -28,6 +28,6 @@
   "require-dev": {
     "squizlabs/php_codesniffer": "^3.7",
     "dealerdirect/phpcodesniffer-composer-installer": "^0.7.2",
-    "wp-coding-standards/wpcs": "^2.3"
+    "wp-coding-standards/wpcs": "dev-develop"
   }
 }