import { Api } from "https://deno.land/x/grammy@v1.11.1/core/api.ts";
Use this method to set the thumbnail of a sticker set. Animated thumbnails can be set for animated sticker sets only. Video thumbnails can be set only for video sticker sets only. Returns True on success.
Parameters
A PNG image with the thumbnail, must be up to 128 kilobytes in size and have width and height exactly 100px, or a TGS animation with the thumbnail up to 32 kilobytes in size; see https://core.telegram.org/stickers#animated-sticker-requirements for animated sticker technical requirements, or a WEBM video with the thumbnail up to 32 kilobytes in size; see https://core.telegram.org/stickers#video-sticker-requirements for video sticker technical requirements. Pass a file_id as a String to send a file that already exists on the Telegram servers, pass an HTTP URL as a String for Telegram to get a file from the Internet, or upload a new one using multipart/form-data. More info on Sending Files ». Animated sticker set thumbnails can't be uploaded via HTTP URL.
Optional AbortSignal to cancel the request
Official reference: https://core.telegram.org/bots/api#setstickersetthumb