chore: bump module-core version

Author: fabiano-mallmann

composer.json

@@ -6,7 +6,7 @@
     "description": "Magento 2 Module Pagar.me",
     "require": {
         "php": ">=7.1",
-        "pagarme/ecommerce-module-core": "2.8.*"
+        "pagarme/ecommerce-module-core": "~2.8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^5 | ^6 | ^7 | ^8 | ^9",