feat: upgrade casbin to 3.1

Author: leeqvip

composer.json

@@ -22,7 +22,7 @@
     "require": {
         "php": ">=7.1.0",
         "laravel/framework": "~5.5|~6.0|~7.0|~8.0",
-        "casbin/casbin": "~2.0",
+        "casbin/casbin": "~3.1",
         "casbin/psr3-bridge": "^1.1"
     },
     "require-dev": {