Apply go fix modernizations

multicast.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"math/rand"
 	"net"
+	"slices"
 	"sync"
 	"time"
 
@@ -207,10 +208,8 @@ func (c *Conn) isQuery(packet gopacket.Packet) bool {
 			}
 			c.mu.Lock()
 			defer c.mu.Unlock()
-			for _, groupIP := range c.groups {
-				if igmp.GroupAddress.Equal(groupIP) {
-					return true
-				}
+			if slices.ContainsFunc(c.groups, igmp.GroupAddress.Equal) {
+				return true
 			}
 		}
 	case *layers.IGMP: