feat: replace github.com/pkg/errors to errors

Signed-off-by: haoyun <yun.hao@daocloud.io>
Co-authored-by: zounengren <zouyee1989@gmail.com>

pkg/dialer/dialer.go

@@ -18,10 +18,9 @@ package dialer
 
 import (
 	"context"
+	"fmt"
 	"net"
 	"time"
-
-	"github.com/pkg/errors"
 )
 
 type dialResult struct {
@@ -74,6 +73,6 @@ func timeoutDialer(address string, timeout time.Duration) (net.Conn, error) {
 				dr.c.Close()
 			}
 		}()
-		return nil, errors.Errorf("dial %s: timeout", address)
+		return nil, fmt.Errorf("dial %s: timeout", address)
 	}
 }