Processed apps directory via GitHub Actions

appstore/mailserver/data.yml

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+additionalProperties:
+  key: mailserver
+  name: Mailserver
+  tags:
+    - Email
+    - Local
+  shortDescZh: 可用于生产的全栈但简单的邮件服务器
+  shortDescEn: A fullstack but simple mail server (smtp, imap, antispam, antivirus, etc.)
+  type: runtime
+  crossVersionUpdate: true
+  limit: 0
+  website: https://docker-mailserver.github.io/docker-mailserver/latest/
+  github: https://github.com/docker-mailserver/docker-mailserver/
+  document: https://docker-mailserver.github.io/docker-mailserver/latest/