net/bind918: update to 9.18.12

--- 9.18.12 released ---

6083. [bug] Fix DNSRPS-enabled builds as they were inadvertently
broken by change 6042. [GL #3827]

6082. [test] fuzz/dns_message_checksig leaked memory when shutting
down. [GL #3828]

6081. [bug] Handle primary server address lookup failures in
nsupdate more gracefully. [GL #3830]

6080. [bug] 'named -V' leaked memory. [GL #3829]

6079. [bug] Force set the DS state after a 'rdnc dnssec -checkds'
command. [GL #3822]

6075. [bug] Add missing node lock when setting node->wild in
add_wildcard_magic. [GL #3799]

6074. [func] Refactor the isc_nm_xfr_allowed() function to return
isc_result_t instead of boolean. [GL #3808]

6073. [bug] Set RD=1 on DS requests to parental-agents. [GL #3783]

6072. [bug] Avoid the OpenSSL lock contention when initializing
Message Digest Contexts by using explicit algorithm
fetching, initializing static contexts for every
supported algorithms, and initializing the new context
by copying the static copy. [GL #3795]

6071. [func] The use of "port" when configuring query-source,
transfer-source, notify-source and parental-source
addresses has been deprecated, along with the
use-v[46]-udp-ports and avoid-v[46]-udp-ports
options. A warning will be logged when these
options are used. In a future release, they
will be removed. [GL #3781]

6069. [bug] Detach from the view in zone_shutdown() to
release the memory held by the dead view
early. [GL #3801]

6068. [bug] Downloading a zone via TLS from a server which does
not negotiate "dot" ALPN token could crash BIND
on shutdown. That has been fixed. [GL #3767]

(taca)