chore(deps): 更新 swoole/phpx 依赖版本

- 将 swoole/phpx 从 ~2.3.7 更新到 ~2.3.9
- 保持其他依赖版本不变

composer.json

@@ -6,7 +6,7 @@
     "marcj/topsort": "^2.0",
     "symfony/var-dumper": "^8.0",
     "symfony/yaml": "^8.0",
-    "swoole/phpx": "~2.3.7"
+    "swoole/phpx": "~2.3.9"
   },
   "require-dev": {
     "phpunit/phpunit": "^10.4",