community/postfixadmin: use php82
it already supports php82 https://github.com/postfixadmin/postfixadmin/blob/postfixadmin-3.3.13/CHANGELOG.TXT#L18
and php82 gonna be default #15353 (closed)
it already supports php82 https://github.com/postfixadmin/postfixadmin/blob/postfixadmin-3.3.13/CHANGELOG.TXT#L18
and php82 gonna be default #15353 (closed)