Bump wp-coding-standards/wpcs from 2.3.0 to 3.0.0

Bumps [wp-coding-standards/wpcs](https://github.com/WordPress/WordPress-Coding-Standards) from 2.3.0 to 3.0.0.
- [Release notes](https://github.com/WordPress/WordPress-Coding-Standards/releases)
- [Changelog](https://github.com/WordPress/WordPress-Coding-Standards/blob/develop/CHANGELOG.md)
- [Commits](WordPress/WordPress-Coding-Standards@2.3.0...3.0.0)

---
updated-dependencies:
- dependency-name: wp-coding-standards/wpcs
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

composer.json

@@ -8,7 +8,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^8.5",
-        "wp-coding-standards/wpcs": "^2.3",
+        "wp-coding-standards/wpcs": "^3.0",
         "dealerdirect/phpcodesniffer-composer-installer": "^1.0.0",
         "wpackagist-plugin/tour-operator": "^1.4.1",
         "wpackagist-theme/lsx": "^3.0",