package/asterisk: security update to 20.9.2

See here for a changelog:
https://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLog-20.9.2.md

And here for the security advisory:
https://github.com/asterisk/asterisk/security/advisories/GHSA-c4cg-9275-6w44

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/asterisk/asterisk.hash

@@ -1,5 +1,5 @@
 # Locally computed
-sha256  c928c715dc5ff783ea6cf62cca3eebdc1dc9c5d40ce9b37b0213c0eac7f4090f  asterisk-20.9.1.tar.gz
+sha256  6bc4d982a238397bf6b3bfa523f63a75a2d9b19edd6f33f79264f2385d05bc42  asterisk-20.9.2.tar.gz
 
 # sha1 from: http://downloads.asterisk.org/pub/telephony/sounds/releases
 # sha256 locally computed

package/asterisk/asterisk.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-ASTERISK_VERSION = 20.9.1
+ASTERISK_VERSION = 20.9.2
 # Use the github mirror: it's an official mirror maintained by Digium, and
 # provides tarballs, which the main Asterisk git tree (behind Gerrit) does not.
 ASTERISK_SITE = $(call github,asterisk,asterisk,$(ASTERISK_VERSION))