feat(cdkey): 更新 CommonCdkey 配置

- 将 "myth" 激活码配置修改为 "辞旧迎新"
- 更新激活码内容，包括邮件标题和奖励物品

LogicServer/data/config/cdkey/CommonCdkey.config

@@ -35,8 +35,8 @@ CommonCDKeyConf={
 	mailcontent = "尊敬的玩家：感谢您的支持，请查收您的礼包奖励。",
 	switch = 1,
 },
-["myth"] = {
-	cdkey = "myth",
+["newyear"] = {
+	cdkey = "辞旧迎新",
 	awards = {{type=0,id=1151,count=1},{type=0,id=1164,count=100},{type=0,id=1250,count=1}},
 	mailtitle = "预祝大家新年快乐,阖家欢乐!",
 	mailcontent = "尊敬的玩家：感谢您的支持，请查收您的礼包奖励。",