chore: バージョンを5.8.0にバンプ

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: pooza

config/application.yaml

@@ -406,7 +406,7 @@ package:
     - tkoishi@b-shock.co.jp
   license: MIT
   url: https://github.com/pooza/mulukhiya-toot-proxy
-  version: 5.7.0
+  version: 5.8.0
 parser:
   note:
     fields: