all: adopt slices helpers

integration/hsic/hsic.go

@@ -18,7 +18,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -1295,8 +1295,8 @@ func (t *HeadscaleInContainer) ListNodes(
 		}
 	}
 
-	sort.Slice(ret, func(i, j int) bool {
-		return cmp.Compare(ret[i].GetId(), ret[j].GetId()) == -1
+	slices.SortFunc(ret, func(a, b *v1.Node) int {
+		return cmp.Compare(a.GetId(), b.GetId())
 	})
 
 	return ret, nil