bind: 9.18.11 -> 9.18.17

upgrade also include fix for CVE-2023-2829.

License-Update: removed trailing whitespace from COPYRIGHT

also remove obsolete configuration option epoll and devpoll:
https://github.com/isc-projects/bind9/commit/6b6076c882a00028197b04a827f6cf8e7a5369de



Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>