Merge branch 'staging' of https://github.com/coderdojo-japan/dojocon2024.coderdojo.jp into staging

Author: jun1waka

_data/countdown.yml

@@ -8,4 +8,14 @@
 #   date: 2024.07.14
 - title: '#1 今回のテーマ'
   id: gMAAfqhtav0
+  date: 2024.07.30
+
+- title: '#2 参加申し込み & 企画紹介'
+  id: aZNrVxRgO8I
   date: 2024.08.05
+
+
+- title: '#3 セッション紹介'
+  id: RSxjUkfSqpo
+  date: 2024.08.11
+

_posts/2024-06-09-staff.md _posts/2024-08-09-staff.md_posts/2024-06-09-staff.md renamed to _posts/2024-08-09-staff.md

@@ -3,7 +3,7 @@ layout: post
 title: 当日お手伝いしてくださる方を募集します
 date: 2024-08-09T16:00:00 UTC+9
 categories: news
-# thumbnail: 
+thumbnail: /img/2024/post/staff.jpg
 permalink: /posts/staff/
 ---
 ## DojoCon Japan {{ site.year }}の当日スタッフを募集します！