net-im/openfire: Update to 4.8.3

ChangeLog:
https://download.igniterealtime.org/openfire/docs/4.8.3/changelog.html

Improvement

• [OF-2846] - Update zh\_CN translation

Bug

• [OF-2843] - When admin attempts to ban owner, incorrect error condition is returned
• [OF-2844] - Admins and owners must not be able to ban themselves
• [OF-2845] - Failing close listener can severely delay closure of connection

PR: 280578
Reported by: nikita@druba.su (maintainer)