add author to query in pins API

src/api/routes/channels/#channel_id/pins.ts

@@ -49,6 +49,7 @@ router.put(
 
 		const message = await Message.findOneOrFail({
 			where: { id: message_id },
+			relations: ["author"],
 		});
 
 		// * in dm channels anyone can pin messages -> only check for guilds
@@ -133,6 +134,7 @@ router.delete(
 
 		const message = await Message.findOneOrFail({
 			where: { id: message_id },
+			relations: ["author"],
 		});
 
 		if (message.guild_id) req.permission?.hasThrow("MANAGE_MESSAGES");