Fixes CVE-2023-49294, CVE-2023-49786, CVE-2022-23537. Changelogs: https://github.com/asterisk/asterisk/releases/tag/18.20.1 https://github.com/asterisk/asterisk/releases/tag/18.20.0 https://github.com/asterisk/asterisk/releases/tag/18.19.0 https://github.com/asterisk/asterisk/releases/tag/18.18.1 https://github.com/asterisk/asterisk/releases/tag/18.18.0 https://github.com/asterisk/asterisk/releases/tag/20.5.0 https://github.com/asterisk/asterisk/releases/tag/20.4.0 https://github.com/asterisk/asterisk/releases/tag/20.3.1 https://github.com/asterisk/asterisk/releases/tag/20.3.0
