types: fix new types issues (#829)

* feat: add tests for deleting channel overwrites

* fix: typings

src/helpers/misc/get_gateway_bot.ts

@@ -1,9 +1,11 @@
 import { rest } from "../../rest/rest.ts";
+import { DiscordGetGatewayBot, GetGatewayBot } from "../../types/gateway/get_gateway_bot.ts";
 import { endpoints } from "../../util/constants.ts";
+import { camelKeysToSnakeCase } from "../../util/utils.ts";
 
 /** Get the bots Gateway metadata that can help during the operation of large or sharded bots. */
 export async function getGatewayBot() {
   const result = await rest.runMethod("get", endpoints.GATEWAY_BOT);
 
-  return result as DiscordBotGatewayData;
+  return camelKeysToSnakeCase(result as DiscordGetGatewayBot) as GetGatewayBot;
 }