support php74

Author: chaz6chez

composer.json

@@ -20,8 +20,8 @@
   },
   "require-dev": {
     "workerman/webman-framework": "^1.0 | ^2.0",
-    "symfony/var-dumper": "^6.0 | ^7.0",
-    "phpunit/phpunit": "^9.6",
+    "symfony/var-dumper": "^5.0 | ^6.0 | ^7.0",
+    "phpunit/phpunit": "^8.0 | ^9.0",
     "webman/console": "^1.0 | ^2.0"
   },
   "suggest": {