fix(helpers): pass null if options.channelId is falsy

src/helpers/members/edit_member.ts

@@ -54,7 +54,7 @@ export async function editMember(guildId: bigint, memberId: bigint, options: Mod
     endpoints.GUILD_MEMBER(guildId, memberId),
     snakelize({
       ...options,
-      channelId: options.channelId ? bigintToSnowflake(options.channelId) : undefined,
+      channelId: options.channelId ? bigintToSnowflake(options.channelId) : null,
     }) as ModifyGuildMember
   );