cmd/internal/storage/bigquery/client: fix govet warning

As reported by golangci-lint v1.61.0:

internal/storage/bigquery/client/client.go:231:21: printf: non-constant format string in call to fmt.Errorf (govet)
		return fmt.Errorf(errstr)
		                  ^

Signed-off-by: Kir Kolyshkin <[email protected]>

Author: kolyshkin

cmd/internal/storage/bigquery/client/client.go

@@ -16,6 +16,7 @@ package client
 
 import (
 	"context"
+	"errors"
 	"flag"
 	"fmt"
 	"os"
@@ -228,7 +229,7 @@ func (c *Client) InsertRow(rowData map[string]interface{}) error {
 				errstr += fmt.Sprintf("Error inserting row %d: %+v\n", errors.Index, errorproto)
 			}
 		}
-		return fmt.Errorf(errstr)
+		return errors.New(errstr)
 	}
 	return nil
 }