Upgrade 2.0 to 2.1

Author: limingxinleo

composer.json

@@ -17,10 +17,10 @@
     },
     "require": {
         "php": ">=7.2",
-        "hyperf/contract": "~2.0.0",
-        "hyperf/exception-handler": "~2.0.0",
-        "hyperf/http-server": "~2.0.0",
-        "hyperf/utils": "~2.0.0",
+        "hyperf/contract": "~2.1.0",
+        "hyperf/exception-handler": "~2.1.0",
+        "hyperf/http-server": "~2.1.0",
+        "hyperf/utils": "~2.1.0",
         "psr/container": "^1.0",
         "psr/event-dispatcher": "^1.0",
         "psr/log": "^1.0"