Upgrade xorm to v1.2.2 (#16663)

* Upgrade xorm to v1.2.2

* Change the Engine interface to match xorm v1.2.2

vendor/xorm.io/xorm/convert/scanner.go

@@ -0,0 +1,19 @@
+// Copyright 2021 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package convert
+
+import "database/sql"
+
+var (
+	_ sql.Scanner = &EmptyScanner{}
+)
+
+// EmptyScanner represents an empty scanner which will ignore the scan
+type EmptyScanner struct{}
+
+// Scan implements sql.Scanner
+func (EmptyScanner) Scan(value interface{}) error {
+	return nil
+}