Apply go fix modernizations

sender.go

@@ -3,7 +3,7 @@ package sacn
 import (
 	"crypto/rand"
 	"net"
-	"sort"
+	"slices"
 	"sync"
 	"time"
 
@@ -128,17 +128,14 @@ func (s *Sender) sendDiscovery() {
 		return
 	}
 
-	sort.Slice(universes, func(i, j int) bool { return universes[i] < universes[j] })
+	slices.Sort(universes)
 
 	const maxPerPage = 512
 	totalPages := (len(universes) + maxPerPage - 1) / maxPerPage
 
-	for page := 0; page < totalPages; page++ {
+	for page := range totalPages {
 		start := page * maxPerPage
-		end := start + maxPerPage
-		if end > len(universes) {
-			end = len(universes)
-		}
+		end := min(start+maxPerPage, len(universes))
 		pkt := BuildDiscoveryPacket(s.sourceName, s.cid, uint8(page), uint8(totalPages-1), universes[start:end])
 		s.conn.WriteToUDP(pkt, DiscoveryAddr)
 	}