Bump wp-coding-standards/wpcs from 1.2.1 to 2.3.0

Bumps [wp-coding-standards/wpcs](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards) from 1.2.1 to 2.3.0.
- [Release notes](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/releases)
- [Changelog](https://github.com/WordPress/WordPress-Coding-Standards/blob/develop/CHANGELOG.md)
- [Commits](WordPress/WordPress-Coding-Standards@1.2.1...2.3.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

composer.json

@@ -19,7 +19,7 @@
         "phpcompatibility/php-compatibility": "^9.1",
         "phpunit/phpunit": "^6.5",
         "stevegrunwell/phpunit-markup-assertions": "^1.2",
-        "wp-coding-standards/wpcs": "^1.0.0"
+        "wp-coding-standards/wpcs": "^2.3.0"
     },
     "scripts": {
         "test": [