Update dependency johnpbloch/wordpress to v6.8.1 (#61)

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

Author: ata-no-one

composer.json

@@ -31,7 +31,7 @@
         "cs:fix": "vendor/bin/phpcbf"
     },
     "require-dev": {
-        "johnpbloch/wordpress": "6.8.0",
+        "johnpbloch/wordpress": "6.8.1",
         "phpunit/phpunit": "^12.0 || ^11.0 || ^10.0",
         "wp-coding-standards/wpcs": "^3.1",
         "symfony/finder": "^7.1 || ^6.0"