fix(parser): sql request fix

tg_parser/internal/adapter/database/get_channels_with_tracked_posts.go

@@ -19,7 +19,8 @@ func (d *Database) GetChannelsWithTrackedPosts(ctx context.Context) ([]domain.Ch
     c.access_hash,
     c.pts
 FROM channel c
-INNER JOIN placement p ON p.placement_channel_id = c.id
+INNER JOIN purchase_channel pc ON pc.channel_id = c.id
+INNER JOIN placement p ON p.purchase_channel_id = pc.id
 INNER JOIN post po ON po.id = p.post_id
 WHERE po.deleted_from_channel_at IS NULL;`