Fix lint

Signed-off-by: MyonKeminta <MyonKeminta@users.noreply.github.com>

Author: MyonKeminta

tests/server/gc/gc_test.go

@@ -21,10 +21,11 @@ import (
 	"testing"
 	"time"
 
-	"github.com/pingcap/kvproto/pkg/pdpb"
 	"github.com/stretchr/testify/require"
 	"go.uber.org/goleak"
 
+	"github.com/pingcap/kvproto/pkg/pdpb"
+
 	"github.com/tikv/pd/pkg/keyspace"
 	"github.com/tikv/pd/pkg/mcs/utils/constant"
 	"github.com/tikv/pd/pkg/utils/testutil"