net/asterisk18: update to 18.20.0

Changelog:
  https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-18.20.0.md

net/asterisk18/Makefile

 PORTNAME=	asterisk
-PORTVERSION=	18.19.0
+PORTVERSION=	18.20.0
 CATEGORIES=	net
 MASTER_SITES=	https://downloads.asterisk.org/pub/telephony/%SUBDIR%/:DEFAULT,g729
 MASTER_SITE_SUBDIR=	asterisk/ \

net/asterisk18/distinfo

-TIMESTAMP = 1689884549
-SHA256 (asterisk/asterisk-18.19.0.tar.gz) = c7f87f7eafc87c8623efbb0ef4c26c8af5de1449fdd9c64dc6b035c6ddeb9afc
-SIZE (asterisk/asterisk-18.19.0.tar.gz) = 28421253
+TIMESTAMP = 1697653297
+SHA256 (asterisk/asterisk-18.20.0.tar.gz) = cd9214985a4be6b95217909057f5b50c48c4d2a2421d35a52530bdf533b872a4
+SIZE (asterisk/asterisk-18.20.0.tar.gz) = 28445590
 SHA256 (asterisk/asterisk-core-sounds-en-g729-1.5.tar.gz) = 8b28a59cfa53b59c76e0a191704f0708e3d83acffab8c5e6f25dfc599f0123f9
 SIZE (asterisk/asterisk-core-sounds-en-g729-1.5.tar.gz) = 1551123
 SHA256 (asterisk/asterisk-moh-opsound-g729-2.03.tar.gz) = 0147ca9a97f0c550227aacb7793499057c4d2c64e021c95f93722f27d5549585

net/asterisk18/pkg-plist

@@ -83,6 +83,7 @@
 @sample %%ETCDIR%%/queuerules.conf.sample
 @sample %%ETCDIR%%/queues.conf.sample
 @sample %%ETCDIR%%/res_config_mysql.conf.sample
+@sample %%ETCDIR%%/res_config_odbc.conf.sample
 @sample %%ETCDIR%%/res_config_sqlite.conf.sample
 @sample %%ETCDIR%%/res_config_sqlite3.conf.sample
 @sample %%ETCDIR%%/res_corosync.conf.sample
@@ -260,6 +261,7 @@ include/asterisk/poll-compat.h
 include/asterisk/presencestate.h
 include/asterisk/privacy.h
 include/asterisk/pval.h
+include/asterisk/refer.h
 include/asterisk/res_aeap.h
 include/asterisk/res_aeap_message.h
 include/asterisk/res_audiosocket.h