Update composer.json

Author: barryvdh

composer.json

@@ -26,7 +26,7 @@
         "php": "^7.3|^8",
         "php-http/mock-client": "^1.1",
         "guzzlehttp/psr7": "^1",
-        "mockery/mockery": "^1",
+        "mockery/mockery": "^1.4",
         "phpunit/phpunit": "^9"
     },
     "require-dev": {