refactor: 添加 Mulan PSL v2 开源协议版权信息

- 在 TestTimeZone.java 和 DbBackupTriggerController.java 文件中添加了 Mulan PSL v2 开源协议的版权信息
- 这一修改确保了项目中的文件符合 Mulan PSL v2 开源协议的要求

modules/common/src/test/java/cn/TestTimeZone.java

@@ -1,3 +1,12 @@
+/*
+ * Copyright (c) 2019 Of Him Code Technology Studio
+ * Jpom is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ * 			http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
 package cn;
 
 import org.junit.Test;

modules/server/src/main/java/org/dromara/jpom/func/openapi/controller/DbBackupTriggerController.java

@@ -1,3 +1,12 @@
+/*
+ * Copyright (c) 2019 Of Him Code Technology Studio
+ * Jpom is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ * 			http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
 package org.dromara.jpom.func.openapi.controller;
 
 import cn.hutool.core.convert.Convert;