Upgrade friendsofphp/php-cs-fixer to ^3.0 (#3566)

* Upgrade friendsofphp/php-cs-fixer to ^3.0 and format code

* Rename barnch  to 2.2

* Create CHANGELOG-2.2.md

Author: limingxinleo

src/Context.php

@@ -16,7 +16,7 @@
 
 class Context
 {
-    const FD = 'ws.fd';
+    public const FD = 'ws.fd';
 
     /**
      * @var array

src/CoreMiddleware.php

@@ -21,7 +21,7 @@
 
 class CoreMiddleware extends HttpCoreMiddleware
 {
-    const HANDLER_NAME = 'class';
+    public const HANDLER_NAME = 'class';
 
     /**
      * Handle the response when found.

src/Security.php

@@ -13,15 +13,15 @@
 
 class Security
 {
-    const VERSION = '13';
+    public const VERSION = '13';
 
-    const PATTEN = '#^[+/0-9A-Za-z]{21}[AQgw]==$#';
+    public const PATTEN = '#^[+/0-9A-Za-z]{21}[AQgw]==$#';
 
-    const KEY = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
+    public const KEY = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
 
-    const SEC_WEBSOCKET_KEY = 'Sec-Websocket-Key';
+    public const SEC_WEBSOCKET_KEY = 'Sec-Websocket-Key';
 
-    const SEC_WEBSOCKET_PROTOCOL = 'Sec-WebSocket-Protocol';
+    public const SEC_WEBSOCKET_PROTOCOL = 'Sec-WebSocket-Protocol';
 
     public function isInvalidSecurityKey(string $key): bool
     {