Removed the requirement consul from service-governance. (#5585)

Author: limingxinleo

tests/Stub/FooEnum.php

@@ -11,7 +11,9 @@
  */
 namespace HyperfTest\Di\Stub;
 
-enum FooEnum: int
-{
-    case DEFAULT = 1;
+if (PHP_VERSION_ID > 80100) {
+    enum FooEnum: int
+    {
+        case DEFAULT = 1;
+    }
 }