feat: gitea: vendor + fix heatmap

package/gitea/source/models/migrations/v1_12/v129.go

@@ -0,0 +1,16 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_12
+
+import (
+	"xorm.io/xorm"
+)
+
+func PurgeUnusedDependencies(x *xorm.Engine) error {
+	if _, err := x.Exec("DELETE FROM issue_dependency WHERE issue_id NOT IN (SELECT id FROM issue)"); err != nil {
+		return err
+	}
+	_, err := x.Exec("DELETE FROM issue_dependency WHERE dependency_id NOT IN (SELECT id FROM issue)")
+	return err
+}