refactor: update Magento version to 2.4.7-p4 in compatibility workflow

Author: dermatz

.github/workflows/magento-compatibility.yml

@@ -17,7 +17,7 @@ jobs:
         include:
           - magento-version: '2.4.7'
             php-version: '8.3'
-          - magento-version: '2.4.7'
+          - magento-version: '2.4.7-p4'
             php-version: '8.4'
           - magento-version: '2.4.8-beta2'
             php-version: '8.4'