update golangci-lint (#494)

pkg/format/rtph265/decoder_test.go

@@ -1,6 +1,7 @@
 package rtph265
 
 import (
+	"errors"
 	"testing"
 
 	"github.com/bluenviron/mediacommon/pkg/codecs/h265"
@@ -25,7 +26,7 @@ func TestDecode(t *testing.T) {
 				// test input integrity
 				require.Equal(t, clone, pkt)
 
-				if err == ErrMorePacketsNeeded {
+				if errors.Is(err, ErrMorePacketsNeeded) {
 					continue
 				}