Merge pull request #7 from php-casbin/dependabot/composer/slim/psr7-1.6.1

Bump slim/psr7 from 0.5.0 to 1.6.1

Author: leeqvip

composer.json

@@ -23,7 +23,7 @@
         "casbin/casbin": "^2.0",
         "monolog/monolog": "^2.0",
         "php-di/php-di": "^6.0",
-        "slim/psr7": "^0.5.0",
+        "slim/psr7": "^1.6.1",
         "slim/slim": "^4.2",
         "tuupola/slim-basic-auth": "^3.2"
     },