Update golangci-lint to v2

experimental/libbox/command_urltest.go

@@ -62,10 +62,7 @@ func (s *CommandServer) handleURLTest(conn net.Conn) error {
 				return false
 			}
 			_, isGroup := it.(adapter.OutboundGroup)
-			if isGroup {
-				return false
-			}
-			return true
+			return !isGroup
 		})
 		b, _ := batch.New(serviceNow.ctx, batch.WithConcurrencyNum[any](10))
 		for _, detour := range outbounds {