anker/bot/sticker_storage.py: a workaround for get_sticker_set

The issues is described here:
eternnoir/pyTelegramBotAPI#2212

The error I got was:
`TypeError: StickerSet.__init__() missing 2 required positional
arguments: 'is_animated' and 'is_video'`

Since the bot is not using `is_animated` nor `is_video` I can define
these fields directly in the reply.

anker/bot/sticker_storage.py

@@ -50,7 +50,15 @@ def get_sticker_set(
     bot: telebot.TeleBot, sticker_set_name: str
 ) -> telebot.types.StickerSet | None:
     try:
-        return bot.get_sticker_set(sticker_set_name)
+        # A workaround an issue described here: https://github.com/eternnoir/pyTelegramBotAPI/issues/2212
+        is_workaround = True
+        if is_workaround:
+            result = telebot.apihelper.get_sticker_set(bot.token, sticker_set_name)
+            result["is_animated"] = False
+            result["is_video"] = False
+            return telebot.types.StickerSet.de_json(result)
+        else:
+            return bot.get_sticker_set(sticker_set_name)
     except telebot.apihelper.ApiTelegramException:
         return None