upgrade wordpress importer plugin

Author: Moggach

composer.json

@@ -36,7 +36,7 @@
     "roots/wp-config": "1.0.0",
     "roots/wp-password-bcrypt": "1.1.0",
     "wpackagist-plugin/create-block-theme": "^1.9.0",
-    "wpackagist-plugin/wordpress-importer": "^0.8.0",
+    "wpackagist-plugin/wordpress-importer": "^0.8.4",
     "wpackagist-plugin/wordfence": "^7.6",
     "wpackagist-plugin/safe-svg": "^2.0",
     "mnsami/composer-custom-directory-installer": "^2.0",