chore(release): todo-v0.4.0

Build 4.

Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/todo/halkyon_todo_flutter/pubspec.yaml

@@ -4,7 +4,7 @@ publish_to: none
 
 # <version>+<build>: the build rises with every release, and the instance asks apps below
 # its minimum build to update (halkyon_base's instance basics).
-version: 0.3.0+3
+version: 0.4.0+4
 
 environment:
   sdk: '^3.13.0'