auth: Unload plugins after everything else is deinitialized. Fixes a crash at deinit when SQL drivers were plugins.
auth: Unload plugins after everything else is deinitialized.
Fixes a crash at deinit when SQL drivers were plugins.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot