Add two parameters to PostbackAction

[nanato12]

Overview

On May 13th, a function to open and close the rich menu automatically when you tap the rich menu, etc. were added.

Related issue

• New properties of postback action #313

Reference

https://developers.line.biz/en/news/2022/05/13/richmenu-keyboard/

Operation check

templateMessage := linebot.NewTemplateMessage(
	"タイトル",
	linebot.NewButtonsTemplate(
		"",
		"タイトル",
		"テキスト",
		linebot.NewPostbackAction("Buy", "action=buy&itemid=123", "", "", linebot.InputOptionOpenKeyboard, ""),
		linebot.NewPostbackAction("Buy", "action=buy&itemid=123", "", "", "openKeyboard", "t"),
	),
)
if _, err = bot.ReplyMessage(event.ReplyToken, templateMessage).Do(); err != nil {
	log.Print(err)
}

[kkdai]

LGTM, thanks