fix tag count limit

main.py

@@ -23,7 +23,8 @@ dp = Dispatcher(bot)
 async def check_updates():
     async with redis.lock('e621:update'):
         tag_list = [t.decode() for t in await redis.smembers('e621:subs')]
-        tags = ' '.join(f'~{tag}' for tag in tag_list)
+        for tl_idx in range(0, len(tag_list), 40):
+            tags = ' '.join(f'~{tag}' for tag in tag_list[tl_idx: tl_idx + 40])
             posts = await e621.get_posts(tags)
             if not posts:
                 return