Set 'is_active: true' to CoderDojo 登米:

They were set as 'inactive' due to no activities found for almost 2 years
but they seem to get back to 'active' because they get micro:bit.
https://news.coderdojo.jp/2022/05/16/1500-microbits-to-coderdojo/

Author: yasulab

db/dojos.yaml

@@ -179,7 +179,7 @@
   - ゲーム
 - id: 4
   order: '042129'
-  is_active: false
+  is_active: true
   created_at: '2016-04-25'
   name: 登米
   prefecture_id: 4